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Physics

Physics
Which tube used to produce X-ray?

Roentgen
X-ray tube
None of these
Coolidge tube

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Physics
When a card placed over a tumbler is flicked with the finger, the coin placed over it falls in the tumbler.

Law of conservation of momentum
Law of Inertia
Law of conservation of energy
Newton's third law of motion

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Physics
After removing two electrons from helium atom it become?

Alpha particle
UV rays
Gama particle
X rays

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Physics
A body falling through a liquid acquires a steady velocity is known as

Terminal velocity
End velocity
Touch down velocity
Steady state velocity

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Physics
A tennis ball machine serves a ball vertically into the air from a height of 2 feet, with an initial speed of 110 feet per second. After how many seconds does the ball attain its maximum height?

5.41 sec
4.65 sec
2.87 sec
3.44 sec

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Physics
A body of mass 5 kg accelerates from 12 m/s to 20 m/s in 4 seconds due to the application of a force on it. Calculate the magnitude of this force (in N).

10
80
20
40

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