The time elapsed between viewing a lightning flash and hearing the thunder of a cloud is 10 s. If the speeds of sound and light in the air are 330 m/s and 3 108 m/s respectively, how far away is the storm?

examrobotsa's picture

Submitted by examrobotsa on

Q: 1 (CAPF/2021)
The time elapsed between viewing a lightning flash and hearing the thunder of a cloud is 10 s. If the speeds of sound and light in the air are 330 m/s and 3 × 108 m/s respectively, how far away is the storm?

question_subject: 

Geography

question_exam: 

CAPF

stats: 

0,51,33,12,51,12,9

The correct answer is option 2: About 3300 m.

To calculate the distance of the storm, we can use the formula: distance = speed × time.

The speed of sound in air is 330 m/s, and the time elapsed is 10 s. Therefore, the distance traveled by the sound is 330 m/s × 10 s = 3300 m.

The speed of light in air is 3 × 10^8 m/s, but in this case, we do not need to consider the speed of light since we are given the time elapsed between seeing the lightning flash and hearing the thunder.

So, the distance of the storm is approximately 3300 m.

Practice this on app