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Physics

Physics
Heat from the Sun reaches the Earth by

Convection
Conduction
Reflection
Radiation

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Physics
The ''four stroke petrol engine' is based on

Carnot-cycle
Otto-cycle
Diesel-cycle
Boyle's-cycle

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Physics
Infrasonic sound has a frequency lower than

32 Hz
15 Hz
5 Hz
20 Hz

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Physics
What is the SI unit of temperature?

Celsius
Joule
Fahrenheit
Kelvin

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Physics
Tungsten is used for the manufacture of the filament of an electric bulb, because

It is a good conductor
It is economical
It has a very high melting point
It is malleable

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Physics
A particle dropped from the top of a tower uniformly falls on ground at a distance which is equal to the height of tower. Which of the following paths will be traversed by the particle ?

Circle
Parabolic
Great circle
Hyper–parabolic

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