Browse by Stream
QnA
Home
QnA
Go To Your Study Dashboard

Get Answers to all your Questions

header-bg qa
  • Home
  • Engineering
  • A set of 20 tuning forks is arranged in a series of increasing frequencies. If each fork gives 4 beats with respect to the preceding fork and the frequency of the last fork is twice the frequency o

A set of 20 tuning forks is arranged in a series of increasing frequencies. If each fork gives 4 beats with respect to the preceding fork and the frequency of the last fork is twice the frequency of the first, then the frequency of last fork is ______\mathrm{Hz}.

Option: 1

152


Option: 2

-


Option: 3

-


Option: 4

-


Answers (1)

best_answer

\mathrm{f, f+4, \& f+8 \ldots, 2 f}
For \mathrm{n^{\text {th }}} term in arithmetic progression,

\mathrm{t_{n}=a+(n-1) d}
\mathrm{2 f =f+(20-1) 4}
\mathrm{2 f =f+76}
\mathrm{f=76 \mathrm{~Hz}}

The frequency of the last fork is
\mathrm{2 f=152\, \mathrm{Hz}}

Posted by

Riya

View full answer

JEE Main high-scoring chapters and topics

Study 40% syllabus and score up to 100% marks in JEE

Similar Questions

Trending Articles/News

anam-khan

JEE Main 2025: BTech ECE cut-offs for female candidates go up at top NITs
anam-khan

JEE Main 2025 Session 2 City Slip (OUT) Live: Admit card likely on March 29 at jeemain.nta.nic.in; cut-offs
anam-khan

AESL expands Aakash Digital 2.0 to offer AI-powered coaching for NEET, JEE, Olympiads

Latest Question