Question

The Prime Meridian is the centre of time zone extending between
a. 7 ½q W and 7 ½° E longitudes
b. 7 ½° N and 7 ½° S
c. 17 ½° W and 17 ½° E Longitudes
d. 17 ½° N and 17 ½° S

Answer 1

The answer is option (b). It passes through 7 1/2 degrees North and south. It is because the earth moves through 15 degrees of longitude each hour. So, there are 24 standard time zones (24 x 15 degrees = 360). Every time zone is therefore counted at 15 degrees interval  from the prime meridian. Which extends 7.5 degrees to either side of the central meridian. 

Hope it helps.

Plz mark as brainliest if helpful.

Answer 2

Option a is correct, which is 7 ½ W and 7 ½° E longitudes.

The longitudes / meridians extend over 360° of earth's surface. There are 24 hours per day, in which the entire earth's surface is exposed to the sun, in varying degrees, creating different time zones. 

Each time zone occupies 15°. Assuming that a meridian cuts through a given time zone, it will have to pass through exactly 7 ½° on either side of the time zone. Since longitudes / meridians divide the earth into eastern and western hemispheres, the correct answer will be as given in option a.