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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
The absolute refractive index of any medium is always:

Less than one
More than one
1

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Physics
A device used for converting a.c. into d.c. is called

Induction coil
Rectifier
Transformer
Dynamo

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Physics
Gas thermometers are more sensitive than the liquid thermometers because the gases

Are lighter
Have high,specific heat
Have low specific heat
Have large coefficient of expansion

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Physics
Which of the following criterion is used for any metal to be used as a cooking material ?

More specific heat
More thermal conductivity
Less electrical conductivity
Less thermal conductivity

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Physics
What type of force acts on a car moving around a curve?

Centripetal force
Gravitational force
Centrifugal force
Cohesive force

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