The quantum theory of light was given by
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Find the potential energy gained by a body of mass 25 kg, if it is raised by 5 m. (use g = 10 m/s2)
The phenomenon of change in direction of light when it passes from one medium to another is called
What is the reason for formation of Mirage in desert?
The functioning of a very old model pendulum clock was completely
The mass per unit volume is called
Consider a hypothetical planet whose mass and radius are both half that of Earth. If g is the acceleration due to gravity on the surface of Earth, the acceleration due to gravity on the planet will be
The tendency of undisturbed objects to stay at rest or to keep moving with the same velocity is called
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