Question

Sound of explosion taking on other planets are not heard by a person on the earth. Why?

• A. The sound of explosion is not so high to reach the earth.
• B. Only air is present between the planets and the earth
• C. There is a region of vacuum in between the planets and the earth
• D. The distance between the planets and the earth is too large for the sound to travel.

Answer 1

The correct option is C There is a region of vacuum in between the planets and the earth

Sound needs a material medium for its propagation from one place to another place. In other words sound cannot travel through vacuum. Since there is a region between the planets and the earth, where there is a vacuum, so the sound of explosions taking place on other planets cannot pass through this vacuum.