The consumption of energy by a 60 watt bulb in 2 sec is_________________?
A. 120 J B. 60 J C. 30 J D. 0.02 J
Physics MCQs with Answers
The escape velocity form the earth surface in km S-1 is____________________?
A. 4.2 km S-1 B. 7.5 km S-1 C. 9.5 km S-1 D. 1.1 km S-1
If moon radius is 1600 km and g on its surface is 1.6 ms-2 then the escape velocity on the moon is ___________________?
A. 1600 ms-1 B. 50.6 ms-1 C. 71.6 ms-1 D. 2263ms-1
When arrow is released form its bow, its energy is transformed from _____________________?
A. heat energy to K.E B. elastic P.E to K.E C. elemical energy to elastic P.E D. K.E to elastic P.E.
The work done by friction is__________________?
A. positive B. negative C. zero D. none of these
The dimension of power is_______________?
A. [ML2T-3] B. [ML2T-2] C. [ML2T3] D. none of these
The dot product of force and velocity is__________________?
A. power B. work C. impulse D. torque
The source of tidal energy is____________________?
A. sun B. earth C. both A and B D. moon
On a clear day at noon the solar energy reaching the earth is ____________________?
A. 1.44kw/m2 B. 1.4kw/m2 C. 1 kw/m2 D. none
Work done will be maximum if the angle between the force F and displacement d is______________________?
A. 45° B. 90° C. 180° D. 0°