Physics
The spoon dropped by an astronaut in a satellite will

Move tangentially away
Fall to the floor
Continue to follow the motion of the satellite
Remain stationary

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Physics
Stationary wave is formed by

A transverse wave superposing a longitudinal wave
Two waves of same frequency travelling in the opposite direction
Two waves of the same speed superposing
Two waves of same frequency travelling in the same direction

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Physics
The term ''equinox' means

When the day and night are of equal duration
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
The path which the Earthtakes around the Sun
The axis of the Earth around which it rotates

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