Physics
Gas thermometers are more sensitive than the liquid thermometers because the gases

Have large coefficient of expansion
Are lighter
Have high,specific heat
Have low specific heat

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Physics
Negative feedback in amplifiers

Decreases bandwidth and decreases noise
Decreases bandwidth and increases noise
Increases bandwidth and increases noise
Increases bandwidth and decreases noise

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Physics
A balloon filled with hydrogen will

Continue going upwards uninterrupted
Reach a particular height and start coming down
Burst after reaching some height
Reach a particular height and remain floating

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