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Physics

Physics
Sun's heat reaches us by

Radiation
Reflection
Conduction
Convection

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Physics
The wave theory of light can explain

Black body spectrum
Comptom effect
Photoelectric effect
Interference of light

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Physics
The speed of light in air is

3 × 108 m/s
8 × 103 m/s
3 × 10–8 m/s
Infinity

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Physics
An object having the capability to do work is said to possess

Pressure
Inertia
Force
Energy

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Physics
Which of the following celestial bodies contains abundant quantities of helium-3, a potential source of energy ?

Moon
Venus
Saturn
Earth

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Physics
A photo-electric cell converts

Light energy to electrical energy
Light energy to chemical energy
Heat energy to mechanical energy
Mechanical energy to electric energy

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