Advertisements
Advertisements
प्रश्न
A boy fires a gun and another boy at a distance hears the sound of fire 2.5s after seeing the flash. If the speed of sound in air 340 m/s, find distance between the boys.
Advertisements
उत्तर
Speed of sound in air (V) = 340 m/s
Time in which sound of fire is heard after flash is seen (t) = 2.5s
Thus, distance between flash and observer = V x t = (340 x 2.5) = 850 m
APPEARS IN
संबंधित प्रश्न
Name the type of waves which are used by astronauts to communicate with one another on moon (or in outer space).
Name one solid, on liquid and one gas through which sound can travel.
State one observation from everyday life which shows that sound travels much more slow than light.
Sound travels in air :
Complete the following sentences :
When sound travels in a medium, the particles of medium ___________ but the disturbance ___________.
How long will sound take to travel in (a) and iron rail and (b) air, both 3.3 km in length? Take speed of sound in air to be 330 m/s and in iron to be 5280 m/s.
Describe an experiment to prove that a material medium is necessary for the propagation of sound.
State three characteristics of the medium required for the propagation of sound.
When we hear a sound, does any part of our body vibrate? Name the part.
Find the odd one out.
