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Physics

Physics
Who among the following discovered X-rays?

W.C Roentgen
J.J Thomson
Marie Curie
James Chadwick

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Physics
The least penetrating power ray is

Alpha rays
None of these
Gamma rays
Beta rays

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Physics
Which one type of radiation has the longest wave length

Radio Wave
Infrared
Ultraviolet
X-ray

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Physics
The basic reason for the extraordinary sparkle of suitably cut diamond is that

It has a very high transparency
It has a very high refractive index
It has well defined cleavage planes
It is very hard

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Physics
Stars in the sky appear to twinkle due to

Multiple diminishing brightness
A series of refractions
A series of reflections
A surface tension phenomenon

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Physics
Which is the point from where an azimuth originates?

North
East
South
West

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