Which of the following is true about the International Date Line?

1. It goes zig-zag at two points.
2. The date changes as one moves across it.
3. It is opposite the Prime Meridian.
4. All of the above.

Assertion (A): For each 1° longitude towards the East, 4 minutes are to be added and each 1° longitude towards the West, 4 minutes are to be subtracted.

Reason (R): The earth rotates on its axis from East to West.

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. 111.
3. A is true but R is false.
4. A is false but R is true.

It was midnight at the Fiji Islands. What would be the time in London?

1. 8:00 am
2. 12:00 noon
3. 8:00 pm
4. None of the above.

A great circle is a circle drawn on the surface of a sphere with radius :

1. equal to the radius of the sphere.
2. equal to half the radius of the sphere.
3. larger than the radius of the sphere.
4. less than the radius of the sphere.