Two bodies of equal weight are kept at heights of h and 1.5 h respectively.The ratio of their P.E. is
3 : 2
2 : 3
1 : 1
1 : 2
A force of 7N acts on an object. The displacement is 8m in the direction of force. What is the work done?
24 J
56 J
54 J
64 J
Which one of these objects posses kinetic energy?
A moving bullet
Blowing wind
A rolling stone
All the above
1 watt =
10 J S-1
1 J S-1
0.1 J S-1
100 J S-1
The energy used in households, industries and commercial establishments are usually expressed in
Joules
W
KWh
None of these.
'Stone at a height'- which type of energy is related to this situation?
Kinetic energy
Potential energy
Mechanical energy
Electrical energy
Which of the following is true when a body starts falling?
Its kinetic energy changes to potential energy
No change taken place
Energy becomes zero
Its potential energy changes to kinetic energy
Which one of these physicists is from Britain?
Thomas Alva Edison
James Prescott Joule
C.V.Raman
None of these
The capacity to do work is
Force
Energy
Momentum
Power
Which of the following is the energy possessed by a body by virtue of its motion?
