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Physics

Physics
In the atmosphere ultraviolet rays are absorbed by

Oxygen
Nitrogen
Helium
Ozone

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Physics
An object with a mass of 22 kg moving with a velocity of 5 m/s possesses a kinetic energy of :

110 J
110 J
275 J
2750 J

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Physics
Which microscope is often used to view metal surfaces?

None of these
Electron microscopes
Optical microscopes
Scanning tunneling microscopes

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Physics
It is difficult to fix a nail on a freely suspended wooden frame. Which law supports this statement?

Newton's third law
Law of inertia
Pascal's law
Newton's second law

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Physics
Which waves cannot be transmitted through vacuum?

Sound
Electromagnetic
Light
Heat

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Physics
When a bottle of scent is kept open in a corner of a room its odour is felt in all parts of the room. This is due to the phenomenon of :

Sublimation
Evaporation
Diffusion
Vaporisation

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