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Physics

Physics
What type of lens is used in a magnifying glass

Plano-concave
Convex
None of these
Concave

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Physics
One nanometer is equal to ________ meters.

10 raised to the power (-12)
10 raised to the power (-6)
10 raised to the power (-9)
10 raised to the power (-3)

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Physics
Heavy water is used in nuclear reactor to

Increase speed of neutron
Increase temperature
Slow down neutron
Absorb neutron

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Physics
Electron microscope works on which of the following principles?

Wave Nature of electrons
Motion of charged particle in electromagnetic fields
Optical interference
Faraday's law of Electromagnetic induction

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Physics
Optical fibres are based on the phenomenon of

Dispersion
Total Internal Reflection
Interference
Diffraction

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Physics
The bending of light when it passes around a corner or a slit is due to ________

Refraction
Diffraction
Reflection
Total internal reflection

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