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Physics

Physics
Who defined the law of gravitation ?

Archimedes
Newton
Faraday
Galileo

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Physics
Ultra violet radiations of the Sun do not reach the earth because, earth's atmosphere is surrounded by

Ammonia
Ozone
Carbon dioxide
Chlorine

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Physics
On which day 'National Science Day' is celebrated in India ?

43889
43886
43884
43887

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Physics
A bomb explodes on the moon. You will hear its sound on earth after ________

You cannot hear the sound of explosion
2 hours 20 minutes
3.7 hours
20 minutes

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

Atomic emission
Atomic absorption
Electron absorption
Electron emission

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Physics
Mercury is commonly used as a thermometric fluid rather than water because

mercury has greater visibility than water
specific heat of mercury is more than water
density of mercury is more than the water
specific heat of mercury is less than water

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