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Physics

Physics
What type of lens is used in a magnifying glass

None of these
Concave
Plano-concave
Convex

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Physics
Person who is colourblind cannot distinguish between

Black and yellow
Red and green
Yellow and white
Green and blue

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Physics
The unit of force is a

Derived Unit
None of these
Fundamental Unit
Basic Unit

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Physics
Relative humidity is expressed as

Ratio
Kilograms
Grams
Percentage

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Physics
What is the reason for twinkling of stars ?

Atmospheric refraction
Dispersion of light
Total internal reflection
Atmospheric reflection

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Physics
The velocity of sound in moist air is more than in dry air because the moist air has

Less pressure than dry air.
More pressure than dry air.
More density than dry air.
Less density than dry air.

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