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.

Assertion (A): There is a time difference of a full day on crossing the IDL.

Reason (R): It is diametrically opposite the Greenwich Meridian.

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): Great circles are used to find the shortest distance between any two points on the earth's surface.

Reason (R): Great circle routes take into account weather or political restrictions.

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.