A. π
B. 3π
C. 6π
D. 12π
Related Mcqs:
- The force beared by a wall on which water strikes normally at a speed of 10m/sec and at a discharge of 0.0001m3/sec is__________________?
A. 1 N
B. 10 N
C. 100 N
D. none - When two bodies move toward each other with constant speeds the distance between them decreases at the rate of 6m / sec. If they move in the same direction the distance between them increases at the rate of 4m/sec. Then their speeds are________________?
A. 5m/s, 1m/s
B. 3m/s, 3m/s
C. 6m/s, 1m/s
D. 4m/s, 2m/s - 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 - hen a body moves in a circle, the angle between its linear velocity and angular velocity is always_______________?
WA. 180°
B. 0°
C. 90°
D. 45° - When a wheel 1 m in diameter makes 30 rev min the linear speed of the point on its rim in ms-1 is_______________?
A. 2π
B. π/2
C. π
D. 20π - 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 - The angular speed of seconds hand of a watch in rads-1 is______________?
A. π
B. π/2
C. π/30
D. π/180 - One radian is equal to______________?
A. 67.3°
B. 57.3°
C. 87.3°
D. 60° - Optical active crystals rotates the __________________?
A. vibrating plane
B. polarization plane
C. diffraction plane
D. interference plane - The relation between linear and angular acceleration is______________?
A. a = a x r
B. a = r x a
C. a = a x r
D. r = a x a
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