Which of the following quantity always changes in a uniform circular motion ?
A) direction of gravitation
B) direction of velocity
C) mass of the object
D) none
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State whether the given statement is ture or flase. (i) The sum of two rationals is always rational. (ii) The product of two rationals is always ratio
Correct Answer - (i) True (ii) True (iii) False (iv) False (v) True (True
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Define Uniform Circular motion. Why is it called a periodic motion ?
Uniform circular motion, motion of a particle moving at a constant speed on a circle. In the Figure, the velocity vector v of the particle is constant in magnitude, but...
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A physical quantity with magnitude as well as direction is called ………………. quantity.
Correct option is B) vector
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The shape of distance vs time graph for a body which is in uniform motion is ………….
B) straight line
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An example for a motion where the speed and direction of motion both changes continuously is
B) Throwing stone into the air, making some angle with the horizontal
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Which of the following quantity always changes in a uniform circular motion ?
B) direction of velocity
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When a body is in uniform circular motion …………… force acts on it.
C) centripetal force
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In uniform circular motion, which of the following is/are correct i) Net force can change only the direction of the velocity of the body
Correct option is D) i, ii, iii
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The direction of acceleration in uniform circular motion is
B) Towards centre
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Market equilibrium of a commodity shows, (a) excess demand (b) quantity demanded greater than quantity supplied
(c) quantity demanded equals quantity supplied
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