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Physics

Physics
The sound produced by a bat is–

Audible
Infrasonic
Subsonic
Ultrasonic

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Physics
How much mechanical work must be done to completely melt 1 gram of ice at 0°C ?

2268 J
336 J
4.2 J
80 J

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Physics
The atmospheric layer reflecting radio waves is called

Stratosphere
Ionosphere
Ozonosphere
Mesosphere

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Physics
The threshold frequency is the frequency below which :

Photo current increases with voltage
Photo current is constant
Photo current decreases with voltage
Photo electric emission is not possible

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Physics
Which one of the following determines the sharpness of image in a camera ?

Size of the camera
The focal length of the lens
The exposure time
The aperture

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Physics
No current will flow between two charged bodies if they have the same

Resistance
Potential
Charge
Charge/ potential ratio

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MORE MCQ ON Physics

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