During sunrise and sunset, sun appears reddish-orange because

A piece of paper and a coin both having the same mass are dropped from the 10th floor of a building. The piece of paper would take more time to reach the ground because

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The figure given above shows the temperature (T) – Time (t) plot when we start heating a piece of naphthalene. The temperature (T*) at the plateau of the curve signifies

Power required by a boy of mass 30 kg to run up a staircase of 40 steps in 10 seconds is (Height of each step is 15 cm) (Take g = 10 m/s2)

Which one among the following properties of a proton may change while it moves freely in a magnetic field?

The deformation involve changes in volume only the strain is called