36 A cylindrical block of area of cross section A and of material of density r is placed in a liquid of density one third of

Question

36 A cylindrical block of area of cross section A and of material of density r is placed in a liquid of density one third of density of block The block compresses a spring and compression in the spring is one third of the length of the block If acceleration due to gravity is g the spring constant of the spring is a p4g b 2p4g c 2p4g 3 d p4g 3 37 In A C circuit in which inductance and capacitance are joined in series current is found to be maximum when the value of inductance is 0 5 H and the value of capacitance is 8 F The angular frequency of applied alternating voltage will be a 400 Hz c 2 10 Hz b 5000 Hz d 500 Hz 38 Angle between magnetic meridian and geographical meridian is called a angle of dip b angle of declination c angle of depression d both a and b 39 Heat is required to change 1 kg of ice of 20 C into steam Q is the heat needed to warm the ice from 20 C to 0 C Q is the heat needed to melt the ice Q is the heat needed to warm the water from 0 C to 100 C and Q is the heat needed to 41 vaporize the water Then The graphical representation of the above process is shown is P 12Poy 4 7Po V Vo 2P P4 2Po P 2P P 2Po 2V V 2V0 Vo 2V V V 2V V A current carrying wire in the neighbourhood produces a Q4 Q3 Q Q b QQ Q Q c Q Q Q3 Q d Q Q Q Q d electric field only 40 The P V equation for a process of an ideal gas is 42 10g of ice at 0 C is mixed with 100 g of water at given by 50 C What is the resultant temperature of mixture a 31 2 C P c 36 7 C a electric and magnetic field b magnetic field only c no field b 32 8 C d 38 2 C

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