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Physics

Physics
Which one of the following ray has minimum wavelength

Utraviolet ray
Cosmic ray
Gamma ray
X-rays

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Physics
The energy associated with motion is called

Both A & B
Kinetic energy
Potential energy
None of these

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Physics
What is the minimum distance (in metres) required to hear an echo?

13
10
17
21

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Physics
When a running car stops suddenly, the passengers tends to lean forward because of:

Inertia of rest
Gravitational force
Inertia of motion
Centrifugal force

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Physics
The purpose of choke in a fluorescent lamp is :

To increase the current flow
To decrease the current flow
To decrease the resistance
Ro decrease the voltage momentarily

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Physics
Decibel is the unit used for

Intensity of sound
Radio wave frequency
Intensity of heat
Speed of light

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