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Physics

Physics
The energy of a photon varies directly with its

Wave length
None of these
Frequency
Speed

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Physics
Light from Sun reaches Earth in approximately

8 minutes
10 minutes
12 minutes
3 minutes

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Physics
'Therm' is the unit of

Distance
Power
Light
Heat

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Physics
A black body can absorb radiations of :

Lower wavelengths only
All wavelengths
Higher wavelengths only
Intermediate wavelengths only

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Physics
What apparatus is used to locate a submerged object?

Pulsar
Quasar
Radar
Sonar

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Physics
Magnetic keepers are used to protect magnets from :

Earth's magnetic field
Demagnetization due to heating
Self-demagnetization
Effect of other magnets

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