The flash of lightning is seen before the thunderstorm is heard. It verifies that
[amp_mcq option1=”sound travels much faster than light” option2=”light travels much faster than sound” option3=”light and sound both travel with same speed” option4=”intensity of flash of lightning is very high during thunderstorm” correct=”option2″]
This question was previously asked in
UPSC NDA-2 – 2023
– Light (the flash) and sound (the thunder) are both produced by the same event.
– We see the light almost instantly because the speed of light in air is extremely high (approximately 3 x 10^8 m/s).
– We hear the thunder later because the speed of sound in air is much lower (approximately 343 m/s at 20°C).
– The time delay between seeing the flash and hearing the thunder is directly proportional to the distance of the thunderstorm.