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When a body is moving along a circular path it covers a certain angle in a given interval of time. Such type of motion is__________________? A. Vibratory motion B. Linear motion C. Rotatory motionD. Angular motion
How many days would be in a year if the distance between the earth and the sun were reduced to half of its present value (assuming circular orbit) ? A. 365 days B. 730 days C. 329 daysD. 129 days
If a body of mass 10 kg is allowed to fall freely, its weight becomes______________? A. 0 B. 89N C. 9.8 N D. 10N
A body of 2 kg is suspended from the ceiling of an elevator moving up with an acceleration g. Its apparent weight in the elevator will be______________? A. 9.8 N B. 19.6 N C. 129.4 ND. 39.2 N
Minimum number of communication satellites required to cover the whole earth is______________? A. 4B. 3 C. 2 D. 5
A satellite moving around the earth constitutes______________? A. An inertial frame of referenceB. Non-inertial frame C. Neither inertial nor non-inertial D. Both inertial and non-inertial
The planet nearest to the earth is______________? A. Venus B. Mercury C. Uranus D. Sun
Who discovered the inverse square law for gravity ? A. Einstein B. GalileoC. Newtons D. Plank
A man of weight W is standing on an elevator which is ascending with an acceleration a. The apparent weight of the man is_______________? A. mg B. mg – maC. mg + ma D. mg – ma
Moving along the circumference of a circle completes two revolutions. If the radius of the circular path is R, the ratio of displacement to the covered path will be_______________? A. πR B. 2πRC. 0 D. 4πR