The consumption of energy by a 60 watt bulb in 2 sec is_________________? April 17, 2025 by admin A. 120 J B. 60 J C. 30 J D. 0.02 J
The escape velocity form the earth surface in km S-1 is____________________? April 17, 2025 by admin 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 ___________________? April 17, 2025 by admin 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 _____________________? April 17, 2025 by admin 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__________________? April 17, 2025 by admin A. positive B. negative C. zero D. none of these
The dimension of power is_______________? April 17, 2025 by admin A. [ML2T-3] B. [ML2T-2] C. [ML2T3] D. none of these
The dot product of force and velocity is__________________? April 17, 2025 by admin A. power B. work C. impulse D. torque
The source of tidal energy is____________________? April 17, 2025 by admin A. sun B. earth C. both A and B D. moon
On a clear day at noon the solar energy reaching the earth is ____________________? April 17, 2025 by admin 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______________________? April 17, 2025 by admin A. 45° B. 90° C. 180° D. 0°
