Which of the following quantities remain constant in the planetory motion as seen from the sun
A) speed
B) angular speed
C) kinetic energy
D) angular momentum
1 Answers
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(I) Kepler derived the laws of planetary motion. (II) Newton provided the reason behind the laws of planetary motion.
Correct option is: (B) (II) is correct.
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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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When objects at different distances are seen by the eye one of the following remains constant.
D) image distance from eye lens
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The sun does not appear red during noon hours because the distance travelled by the sun rays in the atmosphere is less
D) Speed of light is constant when it has passed through medium for all colotus.
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Ohm’s law is valid for …………………. conductors provided the temperature and other physical conditions remain constant.
Correct option is C) metal
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The V-I graph for a metal conductor will be …………………. when provided the temperature and other physical conditions remain constant
Correct option is B) linear
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Motion of a rocket: (a) :: Motion of a satellite around the earth: (b)
B) (a) = non – uniform; (b) = uniform
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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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The statement: “An object in motion will remain in same motion as long as no external force is applied on it” is given by
Correct option is A) Galileo
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The motion of the earth around the sun is called ……………….
Correct option is (a) revolution
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