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All of them will reach the room temperature at the same time
A hydrogen balloon floats up as of
A hydrogen balloon floats up because of
A hydrogen filled balloon rises in air because
A jet engine works on the principle of conservation of
A large ship can float but a steel needle sinks because of
A light ray travelling from denser to rarer medium at an angle of incidence mor than critical angle of concerned media pair suffers.
A light ray travelling from denser to rarer medium at an angle of incidence more than critical angle of concerned media pair suffers.
A light wave is incident over a plane surface with velocity x. After reflection the velocity becomes:
A light year is a measure of :
A light yr is a measure of: