Related Mcqs:

1. 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

2. Minimum number of communication satellites required to cover the whole earth is______________?

   A. 4
   B. 3
   C. 2
   D. 5

3. Geostationary satellite completes one rotation around the earth in_______________?

   A. 3 hours
   B. 6 hours
   C. 12 hours
   D. 24 hours

4. The radius of geostationary orbit from the centre of the earth is nearly______________?

   A. 42000km
   B. 36000km
   C. 24000 km
   D. 18000 km

5. A satellite moving around the earth constitutes______________?

   A. An inertial frame of reference
   B. Non-inertial frame
   C. Neither inertial nor non-inertial
   D. Both inertial and non-inertial

6. 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 days
   D. 129 days

7. The direction of the linear velocity of a body moving in a circle is______________?

   A. along the axis of rotation
   B. along the tangent
   C. directed towards the centre
   D. directed away from the centre

8. 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

9. 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

10. The angular speed of seconds hand of a watch in rads-1 is______________?

    A. π
    B. π/2
    C. π/30
    D. π/180