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General Knowledge Objective Questions { Physics }



120. The sudden fall of atmospheric pressure indicates miltimeters is used to measure?
A.fair weather
B.storm
C.rain
D.cold weather

121. Hydrogen spectrum was first explained by
A.Dalton
B.Erwin Schrodinger
C.Niles Bohr
D.Rutherford

122. Magnetism in materials is due to?
A.electrons at rest
B.circular motion of electrons
C.protons at rest
D.all neutrons at rest

123. 'Short-sight' in human eye can be corrected by using proper
A.convex lens
B.concave lens
C.cylindrical lens
D.bifocal lens

124. What is the reason for twinkling of stars?
A.Dispersion of light
B.Total internal reflection
C.Atmospheric reflection
D.Atmospheric refraction

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