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Physics

Physics
As water is cooled from 4 deg C to 0 deg C, its density

Remains same
Decreases
Increases
None of these

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Physics
Which is a correct way to measure wavelength?

Nearest peak to peak
None of these
Nearest peak to nearest trough
Nearest trough to peak

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Physics
The SI unit of luminous emittance is :

Lumen
Lux
Candela
Lumen second

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Physics
The locomotion of insects to the source of light is called :

Thermotactic
Hydrotropic
Phototactic
Phototropic

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Physics
The base of an electric iron is brightly polished mainly

To make it smooth and frictionless
To reduce heat loss by radiation
To make it rust-proof
To make it more durable

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Physics
Which of the following group of elements are diamagnetic?

Hydrogen, oxygen, Argon
Oxygen, copper, silver
Argon, copper, silver
Hydrogen, argon, copper

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