Physicsmedium · Past Paper
If you are standing 100 meters away from a mountain and you shout, how much time will it take for the echo to reach you? (Speed of sound = 340 m/s)
A0.29 s
B0.59 s
C1.7 s
D3.4 s
✓ Correct Answer: B — 0.59 s
Total distance = 2 * 100 = 200 m. Time = Distance / Speed = 200 / 340 ≈ 0.588 s.
Share this question
More from Physics
- Which color deviates the most in a rainbow?
- Which of the following materials has the highest refractive index?
- An electric kettle rated 1.5kW, 220V is used for 4 minutes to boil water. How much energy is consumed in Joules?
- A ray of light passes through the optical center of a thin lens. What is its path?
- The splitting of white light into its seven constituent colors is called: