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Physics

Physics
Which one of the following wavelengths of light is most effective in photosynthesis ?

Yellow
Blue
Orange
Green

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Physics
An image formed by a plane mirror, that cannot be obtained on a screen is called ________

Inverted image
Real image
Virtual image
Erect image

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Physics
Who among the following is credited for the discovery of ''Expanding Universe"?

Edwin Hubble
V Raman
S Chandra Shekhar
Niels Bohr

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Physics
Which among the following is the fundamental quantity ?

Force
Time
Velocity
Volume

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Physics
The temperature which has the same reading on both Fahrenheit and Celsius scales is

40°
–40°
32°
0°

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Physics
Flywheel is an important part of a steam engine because it :

Gives strength to the engine
Helps the engine in keeping the speed uniform
Accelerates the speed of the engine
Decreases the moment of inertia

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