Physics
A piece of ice is floating in water kept in a beaker. When all the ice melts the level of water will

Remain the same
Rise
First rise and then fall
Fall

ANSWER DOWNLOAD EXAMIANS APP

Physics
Railway tracks are banked on curves so that

No frictional force may be produced between the tracks and the wheels of the train
The train may not fall down inwards
Necessary centrifugal force may be obtained from the horizontal component of the weight of the train
Necessary centripetal force may be obtained from the horizontal component of the weight of the train

ANSWER DOWNLOAD EXAMIANS APP

Physics
Why are we able to hear short wave broadcasts better than long wave broadcasts ?

Short waves are unaffected by atmospheric disturbances.
Short waves are more energetic than long waves.
By convention, short waves are meant for long distances, whereas long waves are reserved for short distances.
Short wave broadcasts are made by nearby radio stations.

ANSWER DOWNLOAD EXAMIANS APP

Physics
Holography is a technique of

Recording a permanent three dimensional multicolour photograph
Recording a permanent, sharp two diimensional black and white or multicolour photograph
Recording a permanent three dimensional black and white photograph
Recording a permanent three dimensional photograph of a given single colour or a multicolour

ANSWER DOWNLOAD EXAMIANS APP