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Physics

Physics
In mirrors the back surface is coated with a thin layer of :

Mercury
Red oxide
Silver nitrate
Silver

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Physics
A bucket of water is hung from a spring balance. A piece of iron is suspended in the water without touching the sides or touching the bottom of the bucket. The reading of the spring balance

Does not change
Will increase
Varies with the increase of depth of the immersion of the iron piece
Will decrease

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Physics
Purity of a metal can be determined with the help of

Archimedes principle
Conservation of mass principle
Boyle's law
Pascal's law

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Physics
Sir C.V. Raman was awarded Nobel Prize for his work connected with which of the following phenomenon of radiation?

Diffraction
Polarization
Scattering
Interference

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Physics
A periscope works on the principle of

Reflection
Diffraction
Refraction
Total internal reflection

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Physics
Which of these is true of all simple machines?

Work input > work output
Both A & B
None of these
These make work easier

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MORE MCQ ON Physics

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