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Physics

Physics
What apparatus is used to locate a submerged object?

Radar
Pulsar
Sonar
Quasar

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Physics
A person can jump higher on the moon's surface than on the earth because :

The acceleration due to gravity in moon is smaller than that on the earth.
The moon has no atmosphere
The moon's surface is rough
The moon is cooler than earth

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Physics
Optical fiber works on the principle of

Refraction
Total internal reflection
Scattering
Interference

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Physics
Instrument used to study the behaviour of a vibrating string is :

Barometer
Sonometer
Hydrometer
Hygrometer

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Physics
The flow of thermal energy is called

Current
Voltage
Potential
Heat

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Physics
Fish and other aquatic creatures can live inside a deep frozen pond because

They can adapt themselves to live in ice
There will always be water just beneath the ice level
Fish are cold-blooded animals
Ice is a bad conductor of heat

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