Physics
A man stands on the pan of a balance holding a fish in his right hand and bucket of water in his left hand. If he transfers the fish into the bucket, the total weight on the pan

Increases
Remains the same
First increases and then decreases
Decreases

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Physics
The Hooke's law is valid for

Elastic as well as plastic region of the stress strain curve
Entire stress strain curve
Only proportional region of the stress strain curve
Entire elastic region of the stress strain curve

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Physics
Superconductors are substances which

offer no resistance to the flow of electricity
conduct electricity at low temperature
conduct electricity at high temperatures
offer high resistance to the flow of current

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