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Physics

Physics
The plastic material commonly used for making gear wheels is

Polyesters
Bakelit
Polystyrene
Nylons

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Physics
The ringing of an electric bell in an enclosed evacuated glass bell jar is not heard outside because

The bell jar is too small
The glass of the bell jar absorbs the sound waves
The ringing is not loud enough
There is no air or any other gas in the bell jar

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Physics
Which Color has the Longest Wavelength?

Red
Violet
Yellow
White

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Physics
One can distinguish a telescope from a microscope by observing

Colour
Length and size of the lens
Size of the lens
Length

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Physics
If the phase difference between two points is 120° for a wave with velocity of 360 m/s and frequency 500 Hz, then path difference between the two points is

6 cm
12 cm
24 cm
1 cm

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Physics
Bolometer is used to measure

Velocity
Wavelength
Temperature
Frequency

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MORE MCQ ON Physics

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