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Physics

Physics
How much calorie of energy is released by a boiled egg ?

77
50
40
60

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Physics
A copper wire of radius r and length l has a resistance of R. A second copper wire with radius 2r and length l is taken and the two wires are joined in a parallel combination. The resultant resistance of the parallel combination of the two wires will be

4 R/5
5 R
R/5
5 R/4

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Physics
The quantity that is not conserved in an inelastic collision is

Total Energy
Momentum
Kinetic Energy
All of these

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Physics
Waves that are required for long distance wireless communication are

Microwaves
Ultraviolet rays
Radio waves
Infrared rays

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Physics
A star appears twinkling in the sky because of

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

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Physics
Pitot tube is used to measure

Dynamic pressure
Velocity at stagnation point
Static pressure
Stagnation pressure

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MORE MCQ ON Physics

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