If the of a simple pendulum is halved its times period t will become : 
T/2, T/?2, ?2 T, 2T

The unit of frequency is  : 
Newton, Meter, Cycle, Hertz

The unit of intensity sound is  : 
Wm, Wm2, Wm1, Nm

The refractive index of water is  : 
1.33, 1, 2.42, 1.3

If the focal length of a lens is 2m,its power will be  : 
2 D, 0.25 D, 0.5 D, 1.0 D

The distance between two point charge is 20 cm .if the distance is reduced 10 cm the Coulombs force would become  : 
Half, Two Times, one Times, Four Times

The power of an electic Fan is  : 
80 Watts, 20 Watts, 90 Watts, 40 Watts

The shape of magnetic lines of force in case of a straight current carrying conductor is  : 
Elliptical, Circular, Triangular, Reactangular

Which of the following radioisotopes is used to diagnose the brain tumor ? 
Cobalt  60, Iodine 131, Carbon  40, Phosphorus  32

In an Ntype crystal the majority carriers are  : 
Holes, Protons, Free Electrons, Positrons

Which of the following discs is called the storage disc ? 
Hard disc , Compact disc , Floppy disc , CD ROM

What is the energy produced from 10 kg of carbon if it is completely changed into energy : 
3 X 10 ^ 9 J, 3 X 10 ^ 17 J, 3 X 10 ^ 16 J, None Of These
