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Physics

Physics
By how many times are the Electrostatic forces stronger than the Gravitational Forces for a fixed distance?

102
2
1036
1012

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Physics
Ventilators are provided near the ceiling of the room because

These provide cross ventilation in the room
These do not look nice in the lower part
These provide some sunlight in the room
The exhaled warmer air rises up and goes out

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Physics
The alluminating powers of two sources are compared by

A fluxmeter
A polarimeter
A spectrometer
A photometer

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Physics
Pieces of camphor placed on water move about rapidly. This is because of

Capillarity
Viscosity
Surface tension
Diffusion

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Physics
Kepler's law of planetary motion states that the square of the time period is proportional to the

Cube of the semi-major axis
Fourth power of the semi-major axis
Semi-major axis
Square of the semi-major axis

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Physics
Fibre optics work on the principle of

Total internal reflection
Optical rotation
Total internal absorption
Scattering of light

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MORE MCQ ON Physics

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