A scooterist moving with a velocity of 36 kmph towards a fort wall and blows a horn. If he hears the echo after 3s, then the distance at which horn is

Question

A scooterist moving with a velocity of 36 kmph towards a fort wall and blows a horn. If he hears the echo after 3s, then the distance at which horn is

A scooterist moving with a velocity of 36 kmph towards a fort wall and blows a horn. If he hears the echo after 3s, then the distance at which horn is blown from the wall is (Velocity of sound in air = 340 m/s)
A. 525 m
B. 510 m
C. 1050 m
D. 500 m

Monjur Alahi

4 views

2025-01-04 04:42

1 Answers

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Salim Ahmed Kawsar · Accepted Answer · 2023-02-05T15:29:48+06:00

Salim Ahmed Kawsar

Correct Answer - A
`v = 36 xx (5)/(18) = 10 m//s`
`2x - Vt = Vt`
`2x = V t + Vt`
`= 340 xx 3 + 10 xx 3 = 1020 + 30`
`2x = 1050`
`x = (1050)/(2) = 525m`

4 views Answered 2023-02-05 15:29