Physics
A person can jump higher on the moon's surface than on the earth because :

The moon's surface is rough
The moon has no atmosphere
The acceleration due to gravity in moon is smaller than that on the earth.
The moon is cooler than earth

ANSWER DOWNLOAD EXAMIANS APP

Physics
The term ''equinox' means

When the day and night are of equal duration
The path which the Earthtakes around the Sun
The axis of the Earth around which it rotates
The time when the Sun seems to be going round and round in the sky in the Arctic but does not go below the horizon

ANSWER DOWNLOAD EXAMIANS APP

Physics
In a railway track, two rails are joined end to end with a gap in between them because

Air-gaps are necessary for bearing the weight of running train
Steel can be saved
Accidents due to expansion in summer can be avoided
Accidents due to contraction in winter can be avoided

ANSWER DOWNLOAD EXAMIANS APP