Basic Physics Questions and Answers

Question 6 Points 2 In his essay Common Sense Paine fears that they might be in danger of being ruled by a ruffian in case they don t act then Whom does the word ruffian refer to O William Henry O William Blake O William the Conqueror W O William Wordsworth

To a fish under water viewing obliquely a fisherman standing on the bank of a lake the man looks KCET 2006 a Taller than what he actually is b Shorter than what he actually is c The same height as he actually is d Depends on the obliquity

Y 3K 911 The upper end of a wire of radius 4 mm and length 100 cm is clamped and its other end is twisted through an angle of 30 The angle of shear is 1 12 lind 2 0 12 3 1 2 4 0 012 wire of uniform cross sectional area 3 x 106 m and length 4m the increase in length is

14 A rubber coated wire is bent in the shape of a rigid sinusoid and then its ends P and Q are electrically connected with the help of a straight conducting wire making a closed loop of total resistance R and do inductance L The amplitude of the sinusoid is ao On the right of the line AA is a region of uniform magnetic field of induction B pointing perpendicular to the plane of the wire loop The loop is made to move along the line PQ with a constant velocity v to enter the magnetic field If one cycle of the sinusoid enters the region of magnetic field in time T find average thermal power generated in the loop while it is entering the region of magnetic field

Identical piece of Ge and Cu are taken and cooled then 1 Resistivity of both increases 2 Resistivity of both decreases 3 Resistivity of Cu increases and Ge decreases 4 Resistivity of Cu decreases and Ge increases

Select the correct text in the passage Which sentence explains why optical land telescopes are not able to take images as clear as those taken by the Hubble Space Telescope Hubble takes pictures of planets stars and galaxies The mixture of gases that surround a planet is called its atmosphere Earth s atmosphere changes and blocks some the light that comes from space Hubble orbits high above Earth and its atmosphere So Hubble can see space more clearly than telescopes on Earth can Hubble is not the kind of telescope that you look through with your eye Hubble uses a digital came to take pictures Then Hubble uses radio waves to send the pictures through the air back to Earth

The speed of sound in hydrogen at NTP is 1270 m s Then the speed in a mixture of hydrogen and oxygen in the ratio 4 1 by volume in m s will be 1 635 See back 2 318 3 158 00 4 1270 1

What phenomenon causes the sky to appear blue Rectilinear Propagation Scattering Interference Dispersion Question 14 1 point A Which statement is true about Earth s magnetic field The north magnetic pole is not in the same location as the north geographic pole The magnetic field lines start and stop at the surface of the Earth A compass operates using the electric field of the Earth The magnetic field lines run from geographic north to geographic south

An object is located 4m from the first of two thin converging lenses of focal lengths 2m and 1m respectively The lenses are separated by 3m The final image formed by the second lens is located from the source at a distance of Source 1 8 0 m 3 6 0 m 4m 3m 2 7 5 m 4 6 5 m

FT GIBSON INDIAN TERRITORY Red FT TOWSON REPUBLIC OF TEXAS bharfy MEXICO FT COFFEY FT SMITH Memphis ARKANSAS TERRITORY LOUISIANA New Orleans Indian lands before relocation MISSISSIPPI Routes of Removal Cherokee Creek Chickasaw Seminole Choctaw TENNESSEE ALABAMA Gulf of Mexico How did American westward expansion impact Native Americans Tennessee M taboochie GEORGIA FT MITCHELL 200 ml 300 km NORTH CAROLINA FLORIDA TERRITORY SOUTH CAROLINA Atlantic Ocean American westward expansion influenced the decision of Native Americans to assimilate into American society which resulted in cultural diffusion American westward expansion influenced the creation of Oklahoma as a Native American sto protect Native land from American settlers American westward expansion influenced the forced removal of Native American tribes which limited opportunities for Native American O American westward expansion influenced the relocation of Native American tribes to Oklahoma in order to protect Native American culture

against the British King Meaning He has refused to enforce laws Complaint He has refused his Assent to Laws the most wholesome and necessary for the public good He has forbidden his Governors to pass Laws of immediate and pressing importance He has refused to pass other Laws for the accommodation of large districts of people unless those people would relinquish the right of Representation in the Legislature a right inestimable to them and formidable to tyrants only He has called together legislative bodies at places unusual uncomfortable and distant from the depository of their Public Records He has obstructed the Administration of Justice by refusing his Assent to Laws for establishing Judiciary Powers He has made Judges dependent on his Will alone for the tenure of their offices and the amount and payment of their salaries He has forbidden the legislature to pass laws He has refused to pass laws that would benefit particular states He expects that states will forfeit their right of representation He made it difficult for the colonists to participate in governance He has forbidden laws to be passed that establish judiciary powers He has denied judges their independence to make decisions based on case facts and the law alone What caused the American Colonists to declare their independence from Great Britain O The American Colonists felt the King limited their rights as English subjects by forcing them to submit to stric laws made without their consent The American Colonists felt the King failed to support Parliament s attempt to grant representation to the colonists so the colonists rebelled The American Colonists felt they should pursue independence due to their success in international trade O The American Colonists felt they needed to transition to French colonial rule due to cultural and economic connections

A wire of infinite length carrying current I lies along the z axis A square loop of side is placed such that the plane of the loop makes an angle 74 with the positive x axis at 0 0 and side AB touches the x axis and parallel to z axis as shown in the figure The magnetic flux passing through the Klod Find the value of k take I 10 amp loop is 7T n 1 6 0 47 and tan 37 3 4 ay A D 0

1 Two people 7 5 meters apart on a spaceship moving 2 3c take a photo of you at the exact same time in their reference frame If you could see very short amounts of time would you agree that they took the photo at the same time If not how far off would their photos be

passage to ansv the question the Northern states are now united in the election of a man Abraham Lincoln to the high office of President of the United States whose opinions and purposes are hostile to slavery the guarantees of the Constitution will then no longer exist equal rights of the states will be lost The slaveholding states will no longer have the power of self government or self protection and the Federal Government will have become their enemy Christopher Memminger South Carolina 1860 http www ushistory org us 32e asp Idan Tem KARALY Terrasses How was the Election of 1860 a turning point in United States history H Caroline 101 Mase The Progress of Secession Union states Border slave states that did not secede States that seceded after the fall of Fort Sunter States that seceded before th fall of Fort Sumter Due to Abraham Lincoln s election in 1860 the federal government was able to pass legislation abolitioning slavery in the western territories which led to the southern secession Due to Abraham Lincoln s election in 1860 the Southern states feared the federal government would violate the southern states right to allow slavery which led to secession The Election of 1860 resulted in the agreement that Southern states will secede from the Union to uphold the economic and political rights of the slave states The Election of 1860 resulted in the creation of a third party that did not support the expansion of slavery which led to the secoccion of t

At room temperature H O exist as a liquid H as a gas and C as a solid Place these compounds in order of strongest attractive forces to weakest attractive forces between molecules O a Ob C Od H O C H H H O C C H O H H O H C

Which of the following titles would best fit a persuasive essay A A Comparison of Coffee and Tea Throughout History B My Life One Bean at a Time C We Should All Drink Tea The Health Benefits of a Tea Regimen D C S Lewis The Life of a Tea Drinker

A ray of light is incident on a surface of glass slab at an angle 45 If the lateral shift produced per unit thickness is 1 3 m the angle of refraction produced is KCET 2009 a tan c sin 3 2 2 1 2 3 b tan d tan 1 2 2 3 1

13 Light with a wavelength of 550 nm illuminates a metallic surface with a work function of 1 10 ev a What is the maximum speed of the photoelectrons T I 3 b What is the minimum potential required to stop the electrons T I 3

A ball is thrown upward from the ground with an initial speed of 24 2 m s at the same instant another ball is dropped from a building 20 m high After how long will the balls be at the same height S

At room temperature substance A exist as a liquid substance B as a gas and substance C as a solid Place these compounds in order of strongest attractive forces to weakest attractive forces between these substances O a O b Oc Od C A B A B C A C B B A C

1826 1848 1850 1856 1861 1869 1893 1896 1900 1920 First public school for girls is open in Boston Massachusetts First women s rights convention held Seneca Falls New York Unmarried women allowed to own land in Oregon Married women granted patent rights in Connecticut Married women control over their earnings in Illinois and Ohio Women granted suffrage in Wyoming s state elections Women granted suffrage in Colorado s state elections Women granted suffrage in Idaho s state elections All states at this time have passed legislation granting married women the right to keep their own wages and keep property in their own name The 19th Amendment is passed granting women over the age of 21 the right to vote in federal and state elections To what extent did the women s rights movement of the 1840s impact women s access to the American Dream O The women s rights movement of the 1840s had no impact on women s access to the American Dream becau women lost political and economic power as a result of the Seneca Falls Convention O The women s rights movement of the 1840s had little impact on women s access to the American Dream Wh individual states changed the economic and political rights for some women there were no immediate national changes The women s rights movement of the 1840s had a moderate impact on women s access to the American Dream While states were slow to change women s economic rights nationally women gained the same political rights a men The women s rights movement of the 1840s had a great impact on women s access to the American Dream because women immediately gained the same political and economic power as men throughout the

21 Boston New York Philadelphia NORTH AMERICA Charlestone CLAVES the question CARIBBEAN ISLANDS WHALE OIL LUMBER FURS RICE SILK INDIGO TOBACCO SUGAR MOLASSES FOUR LE STOCK FISH LIVESTO LUMBER M IRON GUNPOWDER CLOTH TOOLS UGAR MOLASSES WOOD ATLANTIC OCEAN SLAVES MIDDLE PASSAGE GOLD Liverpool ENGLAND Bristol London GUNS CLOTH IRON BEER MANUFACTURED GOODS LUXURIES LUTURE AFRICA SPICES HARDWOODS EUROPE What role did slavery in the 13 American Colonies have in contributing to the structure of British mercantilism Enslaved people were used to produce the tobacco rice and indigo that the 13 American Colonies exported to Britain O Enslaved people were used in the production of sugar molasses and lumber that the 13 American Colonies exported to Britain O Enslaved people were used to manufacture the goods Britain exported t

Child care providers should let children know it is okay to engage in which of the following activities O Treating others disrespectfully O Being overly dramatic Having toileting accidents Making mistakes

In order to get maximum calorific output a burner should have an optimum fuel to oxygen ratio which corresponds 3 times as much oxygen is required theoretically for complete combustion of the fuel A burner which has been adjusted for methane as fuel with X 1 hr of methane and 6X 1 hr of oxygen is to be adjusted for butane In order to get same calorific output what should be the supply of oxygen in 1 hr with 11 hr supply of butane Assume that losses due to incomplete combustion etc are the same for both fuels and that the gases behave ideally Enthalpies of combustion methane 800 kJ mol butane 3120 kJ mol

o measure capacitance of a conductor it is first charged to a potential Vo 1350 V It is then connected by a long conducting wire to a metal sphere of radius r 3 cm As a sult the conductor potential drops to V 900V Choose the correct option s Initial charge on the conductor is 9 nC Capacitance of the conductor is 1 150 nF Charge on the metal sphere after connection is 6 nC Electrostatic Potential Energy is conserved in the process of connection

A frictionless piston cylinder device is used to isentropically compress air from a starting state of P1 abs 100kPa and T1 76 85 C to a final state of P2 abs 1000kPa Your task is to 1 A Assuming constant specific heats extracted at 300K calculate the final temperature T2 units K after the compression process 10 max 1 B Assuming variable specific heats calculate the final temperature T2 units K after the compression process 10 Max Note If property data are extracted from tables in your solution clearly identify these

cule below shows covalent bonds between nitrogen and hydrogen atoms 4 NEN N N N 1111 1 2 3 4 b H Which of the numbered bonds is the strongest 1 4 3

a Calculate the density of states D E of a two dimensional 2D elec tron gas with the usual dispersion relation E k xx k b Calculate the density of states D E of graphite In contrast to the 2D electron gas model the dispersion relation of the electrons in graphite graphene plane follows E k 3a070k 2 The equa tion uses the to indicate the conduction band and the valence band Due to the similar dispersion relation between electrons in graphene and photons one calls them Dirac fermions The lattice parameter ao 0 2462 nm and 70 is around 3 eV

In the following circuit the resultant capacitance is luF Then value of C is 32 a F 11 23 L C HH 8 F A B 2 F wwwwwwww I 1 F 2 F 11 b F 32 32 6 F 12uF 4 F

If aperture of lens is halved then image will be AFMC 2003 a No effect on size b Intensity of image decreases c Both a and b d None of these mos due to

The xy plane is the boundary between two transparent media Medium 1 with z 0 has a refractive index of 2 and medium 2 with z 0 has refractive index of 3 A ray of light in medium 1 given by the vector 6 31 8 31 10k is incident of the plane of separation Angle of refraction in medium 2 is AIEEE 2011 a 30 c 60 b 45 d 75

An archer aims at a falling target from the top of a building He shoots the arrow at the same when the target is dropped The target suffers air resistance of 1 10th of its own weight The archer aims at an angle of 40 with the horizontal and a velocity of 40 m s The building is 200 m from the archer Find the height of the building from where the target was dropped Neglect air resistance of the arrow Also find the change in angle if the arrow is shot to meet the target at the same point neglecting the air resistance of the target 1

A sonometer wire is under a tension of 10 N and the length between the bridges is 2 m A metre long wire of sonometer has mass of 1 0 gm Deduce the speed of transverse wave and the frequency of 1st harmonic Wint V T V

A bob is suspended by a light string of length L The mass of bob is m It is imparted horizontal velocity v 3 gL at lowest point such that it completes circular motion in vertical plane What is speed of the bob at the highest point of circle Options 5gL X gL 3gL Zero Solution

In the figure shown all the three bodies 1 2 3 can move If acceleration of body 1 w r t 2 is a 6 m s and acceleration of 3 w r t ground is a 4 m s then magnitude of acceleration wedge 2 w r t ground is of Huu

c ExB Biological importance of Ozone layer is CBSE PMT 2001 a It stops ultraviolet rays b Ozone rays reduce green house effect c Ozone layer reflects radio waves d Ozone layer controls O H radio in atmosphere

The maximum distance upto which TV transmission from a TV tower of height h can be received is proportional to AIIMS 2003 a h 2 c h b h d h

Which of the following can make use of polaroids Sunglasses Windowpanes O Photographic camera min

Marks 12 Electrical AC circuit is given in Fig 3 Please i Use the method of the branch currents and Kirchhoff s laws and derive the system of equations describing the operation of the circuit ii Solve the system from i and find the numerical instantaneous values of the electrical currents of the branches of the circuit if R 200 2 R2 10 2 R3 502 C 0 1 F L 0 1 H and v t 30 sin 10r V Please note Failure to derive the system in i will result in 0 marks for this assignment even if the numerical values of the currents in ii are correct R ing vi t HH C Li 3 2 R R3 I

A man fires a gun while standing between two parallel hills If he hears the first echo aft 2 s and the second echo 3 s after the first echo then calculate the distance between the hill The velocity of sound is 330 m s

Is zero A Current loop consists of two identical semicircular parts each of radius R one lying in the x y plane and the other in x z plane If the current in the loop is i The resultant magnetic field due to the two semicircular parts at their common centre is CBSE PMT Mains 2010 a c Hoi 2 2R Hoi 4R b d Hoi 2R Moi 2R

NOVEMBER DECONA A refrigerator works between 4 C and 30 C It is required to remove 600 calories of heat every second in order to keep the temperature of the refrigerated space constant The power is Take 1 cal a 2 365 W c 236 5 W 4 2 Joules arhe NEET Phase I 2016 b 23 65 W d 2365 W

4 3 1 grouping of identical cells each of e m f 4 V and internal resistance 1 92 This combination can be replaced by an equivalent cell between A and B having e m f E and internal resistance r where HH 1 E 72V r 18 Q 3 E 72V r 29 A HHH HH R ww B 2 E 24V r 18 Q 4 E 24V r 20

A sphere with cavity inside as shown in figure With one more small sphere is rolled down Find total Centrifugal force acting on the small sphere Provided that mass of larger M and mass of smaller sphere is m Also angle of inclination is provided to be t R

53 A ball rolls from the top of a stair way with a horizontal velocity u m s If the steps are of height h and width b the ball will hit the edge of the nth step when n is equal to 1 3 hu 2gb 4hu gb 2 hu 4gb 2hu ab

8 A siren emitting a sound of frequency 800 Hz moves away from an observer towards a cliff at a speed of 15 ms 1 Then the frequency of sound that the observer hears in the echo reflected from the cliff is Take velocity of sound in air 330 ms NEET 2016 1 885 Hz 3 800 Hz 2 765 Hz 4 838 Hz

6 10 points Determine the scattering amplitude f 0 d and differential cross section in the first Born approximation for the spherically symmetric attractive square well potential Where V 0 is a constant V r 0 S V 0 r sa r a

a Hole in the ozone layer b Formation of ozone layer c Thinning of ozone layer in troposphere d Reduction in ozone thickness in stratosphere

A small piece of metal wire is dragged across the gap between the pole pieces of a magnet in 0 5 second The magnetic flu between the pole pieces is known to be 8x10 Wb The emi induced in the wire is VITEEE 2006 a 16 mV c 1 6 mV b 1 6 V d 16 V 11 long bollow metal

The components of the sum of two vectors 21 3 and 21 3k along x and y directions respectively are J K CET 2010 a 2 and 5 c 2 and 6 b 4 and 6 d 4 and 3