Question :

Light from the Sun reaches us in nearly

A) 2 minutes
B) 4 minutes
C) 8 minutes
D) 16 minutes

Answer : C

Description :

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Sound waves in air are

A) transverse
B) longitudinal
C) electromagnetic
D) polarised

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Metals are good conductors of electricity because

A) they contain free electrons
B) the atoms are lightly packed
C) they have high melting point
D) All of the above

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A) thrust
B) pressure
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