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Physics

Physics
Red light has a wavelength of 70 A°. In "nm" it is

7 nm
0.07 nm
70 nm
700 nm

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Physics
When all the forces and torques are balanced in a mechanical body it is said to be in

Static
None of these
Equilibrium
Buoyancy

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Physics
A particle is thrown vertically upward. When it reaches the highest point, it has

A downward velocity
An upward acceleration
A horizontal velocity
A downward acceleration

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Physics
What is the other name of Galileo's law of falling bodies?

Newton's third law
Newton's second law
Newton's first law
Law of motion

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Physics
Which of the following is a non renewable source of energy ?

Wind
Coal
Solar
Biogas

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Physics
Sound travels with a different speed in media. In what order does the velocity of sound increase in these media?

Iron, water and air
Iron, air and water
Air, water and iron
Water, iron and air

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