Physics
The time period of a pendulum when taken to the Moon would:

Become zero
Decrease
Remain the same
Increase

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Physics
Holography is a technique of

Recording a permanent three dimensional photograph of a given single colour or a multicolour
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 multicolour photograph

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