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Physics

Physics
Lakes freeze in cold countries in winter, leaving the water underneath at

4°F
4°C
0°C
0°F

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Physics
While ascending a hill, the driver of the vehicle keeps the gear ratio

Equal to 1
Greater than 1
Either equal to or greater than 1
Less than 1

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Physics
Ultrasound devices operate with minimum frequency from

20kHz
60 kHz
35 kHz
45 kHz

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Physics
For a ray of light to suffer total internal reflection it has to pass from :

Air to water
Water to glass
Glass to water
Air to glass

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Physics
Which of the following cannot be used for making lenses?

Soil
Water
Plastic
Glass

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Physics
When hot-water is sprinkled on a hotter glass tumbler, it breaks because

Glass suddenly expands
Glass suddenly contracts
Water evaporates
Glass reacts chemically with water

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MORE MCQ ON Physics

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