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Class 11 Physics
Physical World Chapter 1
Quiz 1
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Which scientist does not belong to Germany?
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Hertz
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Werner Heisenberg
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Roentgen
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Niels Bohr
Who discovered radioactivity?
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Einstein
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Becquerel
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Newton
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C.V. Raman
Which is the strongest fundamental force of nature?
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Gravitational force
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Weak nuclear force
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Strong nuclear force
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Electromagnetic force
Which force operates among the heavier elementary particles?
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Strong nuclear force
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Electromagnetic force
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Gravitational force
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Weak nuclear force
Electromagnetic force is stronger than gravitational force by a factor of
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1010
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1036
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103
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100
Who discovered the ultra short radio waves?
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James Clerk Maxwell
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J.C. Bose
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J.J. Thomson
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Marie Curie
The wave nature of electrons is used in which of the following devices?
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Photocell
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Electron microscope
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Tokamak
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Aeroplane
The phenomenon of Photoelectric effect is used in
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Photocell
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Sonar
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Electron microscope
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Optical fibres
According to Einstein's theory, mass and energy are related as
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E = m/c
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E = mc2
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E = m c
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E = m/c2
On which laws is the principle of rocket propulsion based?
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Newton's first law of motion
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Newton's law of gravitation
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Laws of thermodynamics
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Newton's second and third laws of motion
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