Question

Assertion (A): 1° angular distance of the parallels of latitudes is roughly equal to 111 km. 

Reason (R): The poles are each located at 90° angular distance north or south of the Equator.

Options

• Both A and R are true and R is the correct explanation of A.

• Both A and R are true but R does not explain A.

• A is true but R is false.

• A is false but R is true.

Answer 1

Both A and R are true and R is the correct explanation of A.

Explanation:

• Assertion (A) is true: The 1° angular distance of the parallels of latitude is roughly equal to 111 km because the Earth's circumference is divided into 360° of latitude, and the distance around the Earth is about 40,075 km. Hence, each degree of latitude corresponds to approximately 111 km.
• Reason (R) is true: The poles are located at 90° angular distance north or south of the Equator, making the total angular distance between the poles 180° (90° north and 90° south).

The reason helps explain why each degree of latitude corresponds to about 111 km, as the poles are 90° away from the equator, and the Earth's circumference is divided by these degrees.