Physics
If lift is going up with acceleration, the apparent weight of a body is

Equal to the true weight
May be more or less than true weight
Less than the true weight
More than the true weight

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Physics
Rainbows are produced when sunlight :

None of the given statements is correct.
Incident on rain drops hanging in the atmosphere is dispersed after suffering refraction and internal reflection.
Incident on rain drops hanging in the atmosphere is dispersed after suffering refraction
Incident on raindrops hanging in the atmosphere is dispresed after suffering reflection.

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Physics
Isotopes of an element contain

equal number of protons and electrons
the same number of protons but different number of neutrons
the same number of neutrons but different number of protons
equal number of nucleons

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