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Physics

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

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

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Physics
The minimum number of forces to keep a particle in equilibrium is

3
2
1
4

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Physics
Intensity of any wave is proportional to which of the following?

Cube of amplitude
Square root of amplitude
Square of amplitude
Amplitude

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Physics
Which combination of colour is the most convenient during day and night time ?

Red and green
Yellow and blue
White and black
Organe and blue

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Physics
A falling drop of rain water acquires the spherical shape due to

Viscosity
Gravitational force
Surface Tension
Atmospheric pressure

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Physics
What happens to a liquid, when the vapour pressure equals the atmospheric pressure?

The liquid boils
The liquid evaporates
No change
The liquid cools

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