Doing work on an elastic band by stretching it stores …………….potential energy.
a) elastic P.E
b) inelastic P.E
c) gravitational P.E
d) spring P.E
A battery contains ………………potential energy.
a) solar
b) electrical
c) chemical
d) both b & c
Mathematically gravitational potential energy is given
as …………..
a) EG.P.E = mg
b)
EG.P.E = mgh
c) EG.P.E = mh
d)
none of these
Explanation: gravitational potential energy is the product of mass ‘m’, the acceleration due to gravity ‘g’,and change in height ‘h’.
Potential energy is a ………………quantity.
a) basic
b) derived
c) scalar
d)
vector
If we lift a brick of mass 0.3 kg from the ground to 2m high the work done against the force of gravity, this work appears as ……..J of energy.
a) 5.88
b) 6.88
c) 7.88
d) 9.88
Explanation: EG.P.E = mgh
According to Big Bang Theory the amount of energy Big Bang contain was………………
a) 1058J
b) 1068J
c) 1078J
d) 1098J
