Book Online Demo

Check Your IQ

Try Test

Courses

Offline Centres

[11]
A person makes a sound and hears it echo after $1.2 seconds$ later. Calculate the distance of the person from the object causing the echo. Speed of sound is $332 m s^{- 1}$ .

see full answer

Talk to JEE/NEET 2025 Toppers - Learn What Actually Works!

Real Strategies. Real People. Real Success Stories - Just 1 call away

An Intiative by Sri Chaitanya

200 m

199.2 m

175.6 m

225 m

answer is B.

(Unlock A.I Detailed Solution for FREE)

Ready to Test Your Skills?

Check your Performance Today with our Free Mock Test used by Toppers!

Take Free Test

Detailed Solution

Distance of the person from the object causing the echo is given by

199.2 m

.
As we know for an echo,
The relation between the distance travelled by the echo

(d)

, in time

t

with a velocity

v

is given by,

2 d = vt

⇒

d = \frac{v \times t}{2}

= \frac{332 \times 1.2}{2}

= 199.2 m

JEE

NEET

Foundation JEE

Foundation NEET

CBSE