Physics
Let a thin capillary tube be replaced with another tube of insufficient length then, we find water

depressed
will overflow
change its meniscus
will not rise

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Physics
In the gamma decay of a nucleus

The mass number of the nucleus does not change whereas its atomic number changes
Both the mass number and the atomic number of the nucleus change
Neither the mass number nor the atomic number of the nucleus changes
The mass number of the nucleus changes whereas its atomic number does not change

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Physics
A white and smooth surface is

Bad absorber and bad reflector of heat
Good absorber and bad reflector of heat
Good absorber and good reflector of heat
Bad absorber and good reflector of heat

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