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Physics

Physics
The minimum number of geostationary satellites needed for uninterrupted global coverage is :

3
4
1
2

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Physics
The mercury and sodium street lamps light up because of :

Atomic emission
Atomic absorption
Electron absorption
Electron emission

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Physics
The best conductor of electricity among the following is :

Aluminium
Copper
Iron
Silver

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Physics
A star appears twinkling in the sky because of

Refraction of light by atmosphere
Diffraction of light by atmosphere
Scattering of light by atmosphere
Reflection of light by atmosphere

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Physics
A disk and a sphere of same radius but different masses roll on two inclined planes of the same altitude and length. Which one of the two objects gets to the bottom of the plane first ?

Both reach at the same time
Sphere
Depends on their masses
Disk

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Physics
A light year is a measure of :

Speed
Velocity
Time
Distance

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MORE MCQ ON Physics

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