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Physics

Physics
Sound of frequency below 20 Hz is called

audio sounds
infrasonic
ultrasonic
supersonics

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Physics
Newton's first law of motion gives the concept of

Work
Inertia
Momentum
Energy

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Physics
The mercury and sodium street lamps light up because of :

Electron absorption
Atomic emission
Atomic absorption
Electron emission

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Physics
Which of the following is used for regulated electric supply ?

Tunnel diode
Gun diode
Junction diode
Zener diode

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Physics
A circular plate, a cube and a sphere, all made up of same material and having the samemass, are heated to 300°C and left in a room. Which of them will have the slowest rate of cooling?

Sphere
Cube
Circular plate
All will cool at the same rate

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Physics
When a light wave is reflected from a mirror, there is a change in its

Velocity
Frequency
Wavelength
Amplitude

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MORE MCQ ON Physics

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