……………….. energy which is used in bomb is gained from
electromagnetic force
Weak nuclear energy
Gravitational force
strong nuclear energy
…………. Which of the following forces is not exist in nature
inertia
electromagnetic
friction
none of the previous
the weight is measured ina
gram
Meter
Kg
Newton
…………. on moving from position B to A , mass
decreases
doubled
still the same
increases
................. A force is can affect all the following except
A ball
A wall
A pen
A book
if the mass of an object is 420 kg and the earth gravitational acceleration is 10m/sec2. It’s weight is………….Kg
4.02
4200
42
24
The ratio between mass of the object at the pole to its mass at the equator is……….one
Equal to
Less than
More than
………….. on cutting electricity from electromagnet, its magnetism
is lost
is not affected
.……… By increasing the distance between center of the earth and the object, its weight
…………………….. The idea of making motor is to
Change magnetic energy to electric energy
Change electric energy to mechanical energy
Change mechanical energy to electric energy
Change electric energy to magnetic energy
………….. On travelling from a place to another, its mass
…………. On moving from position B to A , weight
…………… Apple falls down due to the effect of
Strong nuclear energy
electromagnet
changes electric energy to magnetic energy ………………….
electric generator
dynamo
electric motor
………. the weight of person on earth is 50N, so its weight in a balloon is
40
500
50
400