Consider the following statements 1. A rubber ball bounces higher at the equator than at the poles. 2. When two persons walk on the moon, they hear each other with lower frequency. Which of the statements given above is/ are correct ?

examrobotsa's picture

Submitted by examrobotsa on

Q: 105 (CDS-I/2006)
Consider the following statements
1. A rubber ball bounces higher at the equator than at the poles.
2. When two persons walk on the moon, they hear each other with lower frequency.
Which of the statements given above is/ are correct ?

question_subject: 

Geography

question_exam: 

CDS-I

stats: 

0,44,51,44,8,33,10

keywords: 

{'lower frequency': [0, 0, 2, 0], 'moon': [2, 0, 5, 2], 'rubber ball': [0, 0, 2, 0], 'equator': [10, 0, 6, 7], 'poles': [5, 0, 7, 15]}

The correct answer is option 1 - "1 only".

Statement 1 states that a rubber ball bounces higher at the equator than at the poles. This statement is correct. When a ball is dropped, it bounces back due to the elastic nature of rubber. However, at the equator, the rotational speed of the Earth is higher compared to the poles. This increased speed at the equator leads to a slight bulge in the Earth`s shape, making the equator slightly farther from the Earth`s center than the poles. As a result, objects at the equator experience a slightly higher gravitational force compared to the poles. This additional force causes the ball to bounce higher at the equator.

Statement 2 states that when two persons walk on the moon, they hear each other with lower frequency. This statement is incorrect. On the moon, there is no atmosphere to transmit sound waves, and hence, there is no medium for sound propagation. Sound requires a medium to travel, such as air or water. Therefore, without an atmosphere, no sound can be transmitted on the moon, and two persons walking on the moon would not be able to hear each other.

Overall, statement 1 is correct, and statement 2 is incorrect.