1
You visited us 1 times! Enjoying our articles? Unlock Full Access!
Question

# A source of sound producing sound of frequency f is at rest. An observer starts moving toward it at t=0 with a constant small acceleration. Which of the following graph best represents the variation of observed frequency f′ recorded by the observer with time t?

A
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
B
No worries! We‘ve got your back. Try BYJU‘S free classes today!
C
No worries! We‘ve got your back. Try BYJU‘S free classes today!
D
No worries! We‘ve got your back. Try BYJU‘S free classes today!
Open in App
Solution

## The correct option is A After time t, velocity of observer, v0=u+at=at [observer starts from rest] Now, observed frequency, f′=(v+v0v−vs)f ⇒f′=(v+atv)f ⇒f′=(afv)t+f This equation is similar to the equation of straight line, y=mx+c, here, Slope of straight line, m=afv and y−intercept, c=f.

Suggest Corrections
0
Join BYJU'S Learning Program
Join BYJU'S Learning Program