Which of the following is true about the rotation of the earth?

1. The earth completes one rotation in 23:56:4.09 hrs
2. The earth's axis passes through the poles
3. The speed of rotation increases as we move towards the equator
4. All of the above.

See the below figure. What is the value of angle A?

1. 0°
2. 23½°
3. 66½°
4. 90°

Assertion (A): Rotation is the spinning of the earth on its axis from west to east once in 24 hours.

Reason (R): The earth is always tilted in the same direction as it moves round the sun.

1. Both A and R are true and R is the correct explanation of A.
2. Both A and R are true but R does not explain A.
3. A is true but R is false.
4. A is false but R is true.

Assertion (A): The winds and ocean currents move clockwise and are deflected to the right in the Northern Hemisphere.

Reason (R): Coriolis Effect refers to the force experienced by any object moving over the surface of a rotating body such as the earth.

1. Both A and R are true and R is the correct explanation of A.
2. Both A and R are true but R does not explain A.
3. A is true but R is false.
4. A is false but R is true.