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Physics

Physics
Permissible noise level at Residential area during night time is :

45 dB (A)
55 dB (A)
80 dB (A)
75 dB (A)

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Physics
Intensity of sound has

no existence
both subjective and objective existence
a subject existence
an object existence

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Physics
Bending of light rays in denser medium is termed as:

Deflection
Reflection
Dispersion
Refraction

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Physics
Which one of the following instruments is used to study dispersion of light ?

Microscope
Photometer
Telescope
Spectrometer

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Physics
One bar is equal to

104 Pa
105 Pa
106 Pa
103 Pa

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Physics
Refractive Index of glass with respect to water is

43864
43924
44082
44052

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