1 The angle between A 1 jand B 1 1 is a 45 c 45 b 90 d 180 2

Last updated: 6/8/2023

1 The angle between A 1 jand B 1 1 is a 45 c 45 b 90 d 180 2 Which one of the following statements is true a A scalar quantity is the one that is conserved in a process b A scalar quantity is the one that can never take negative values c A scalar quantity is the one that does not vary from one point to another in space d A scalar quantity has the same value for observers with different orientations of the axes 3 Figure shows the orientation of two y4 vectors and in the xy plane If a b and v pi qj Which of the following is correct a a and p are positive while b and q are negative b a p and b are positive while q is negative c a q and b are positive while p is negative d a b p and q are all positive 5 The horizontal range of a projectile fired at an angle of 15 is 50 m If it is fired with the same speed at an angle of 45 its range will be a 60 m b 71 m d 141 m c 100 m temperature area Out of these the only vector quantities are 6 Consider the quantities pressure power energy impulse gravitational potential electrical charge a Impulse pressure and area b Impulse and area c Area and gravitational potential d Impulse and pressure 7 In a two dimensional motion instantaneous speed is a positive constant Then which of the following are necessarily true a The average velocity is not zero at any time b Average acceleration must always vanish c Displacements in equal time intervals are equal d Equal path lengths are traversed in equal intervals 8 In a two dimensional motion instantaneous speed v is a positive constant Then which of the following are necessarily true 4 The component of a vector 7 along x axis will have 9 Three vectors A B and C which is false maximum value if a F is along positive y axis b F is along positive x axis c makes an angle of 45 with the x axis d F is along negative y axis a The acceleration of the particle is zero b The acceleration of the particle is bounded c The acceleration of the particle is necessarily in the plane of motion d The particle must be undergoing a uniform circular motion add up to zero Find a AXB xC is not zero unless B C are parallel b A x B C is not zero unless B C are parallel c If A B C define a plane Ax B xC is in that plane d Ax B C A B C C A B 10 It is found that A B A This necessarily implies a B 0 b A B are antiparallel c A B are perpendicular d A B 0