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Physics

Physics
A gradual increase in loudness is known as

Crescendo
Timbre
None of these
Fortissimo

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Physics
The basic reason for the extraordinary sparkle of suitably cut diamond is that

It is very hard
It has a very high transparency
It has well defined cleavage planes
It has a very high refractive index

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Physics
Which resource is both renewable and inexpensive?

Gold
Sunlight
Minerals
Coal

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Physics
Instruments for measuring Solar Radiation?

Anemometer
Dynamometer
Pyranometer
Ammeter

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Physics
The phenomenon of change in direction of light when it passes from one medium to another is called

Reflection
Propagation
Dispersion
Refraction

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Physics
The reflector of a search light is a :

Plane mirror
Convex mirror
Cylindrical mirror
Concave mirror

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