The speed of the light is maximum in
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A ball, thrown vertically upward, rises to a height of 80 m and returns to its original position. The magnitude of its displacement after 7 s of motion will be ____. (take g = 10 m/s2)
Which of the following can do more work?
A ball of 0.1 kg is dropped from rest. When it falls through a distance of 2 m, the work done by the force of gravity is
The centre of the reflecting surface of a spherical mirror is a point called the ___.
Which of the following is a Non-Luminous body?
If the initial velocity of a car is 5 m/s, and the final velocity is 10 m/s in 5s, then the acceleration is ___.
For what is Mohs scale used?
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