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Physics

Physics
For a freely falling body, the sum of kinetic energy and potential energy is always

Zero
Variable
Same
Unity

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Physics
Which one of the following is an ohmic conductor?

Carbon
Silicon
Silver
Germanium

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Physics
A decibel is

A musical note
The wavelength of noise
A measure of sound level
A musical instrument

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Physics
What measures Air pressure?

Barometer
Barkometer
Spectrometer
Bolometer

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Physics
Which of these is true of all simple machines?

These make work easier
None of these
Both A & B
Work input > work output

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Physics
Forged documents are detected by

Gamma rays
Beta rays
Ultraviolet rays
Infra-red rays

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