LIVE Course for free

Rated by 1 million+ students
Get app now
JEE MAIN 2023
JEE MAIN 2023 TEST SERIES
NEET 2023 TEST SERIES
NEET 2023
CLASS 12 FOUNDATION COURSE
CLASS 10 FOUNDATION COURSE
CLASS 9 FOUNDATION COURSE
CLASS 8 FOUNDATION COURSE
0 votes
34 views
in Physics by (90.1k points)
closed by
The source (S) of sound is moving constant velocity `v_(0)` as shown in diagram. An observer O listens to the sound emmited by the source. The observed frequency of the sound
image
A. continuously decreases
B. continuously increases
C. first decreases then increases
D. first increases then decreases.

1 Answer

0 votes
by (85.2k points)
selected by
 
Best answer
Correct Answer - A
From figure, the velocity of approach `(V cos theta)` decreases as the source comes closer (as `theta` increases). And the velocity of separation also increases as `phi` will decreases. Hence the frequency of should as heard by the observed decreases continuously.
image

Welcome to Sarthaks eConnect: A unique platform where students can interact with teachers/experts/students to get solutions to their queries. Students (upto class 10+2) preparing for All Government Exams, CBSE Board Exam, ICSE Board Exam, State Board Exam, JEE (Mains+Advance) and NEET can ask questions from any subject and get quick answers by subject teachers/ experts/mentors/students.

Categories

...