In case of planets the necessary acceleration is provided by______________?
A. Gravitational force B. Frictional force C. Coulomb force D. Centripetal force
Physics MCQs with Answers
If a car moves with a uniform speed of 2 ms-1 in a circle of radius 0.4. Its angular speed is______________?
A. 4 rad. S-1 B. 5 rad. S-1 C. 1.6 rad. S-1 D. 2.8 ms-1
A body can have constant velocity when it follows a_____________?
A. Elliptical path B. Circular path C. Parabolic path D. Rectilinear path
The angular speed for daily rotation of the earth in rad S-1 is______________?
A. 7.3 x 10 radians/second B. 7.3 x 5 radians/second C. 3.7 x 10 7.3 x 5 radians/second D. 7.3 x 10-5 radians/second
A cyclist cycling around a circular racing track skids because_____________?
A. the centripetal force upon him is less than limiting friction B. the centripetal force upon him is greater than limiting friction C. the centripetal force upon him is equal to the limiting friction D. the friction between the tyres of the cycle and road vanishes
If a wheel of radius r turns through an angle of 30° then the distance through which any point on its rim moves is______________?
A. π /3 x r B. π/6 x r C. V/30 x r D. π / 180 x r
In an angular motion, Newton’s second law of motion is_____________?
A. F=ma B. F=τp/It C. Στ = I α D. All above
The angular speed of seconds hand of a watch in rads-1 is______________?
A. π B. π/2 C. π/30 D. π/180