Mathematics · Wave Optics and Acoustics
A person driving a car at a constant speed of 15 m/s is approaching a vertical wall while sounding the horn. The driver notices a change of 40 Hz in the frequency of the horn between the direct sound and the sound reflected from the wall. Find the actual frequency of the horn. (Given: Speed of sound = 330 m/s)
Verified Solution4 OptionsUpdated: October 2026👁️1 View
Share:
- 1460 Hz
- 2440 Hz
- 3420 Hz✓
- 4400 Hz
Correct answer
420 Hz
Download Single Question PDF
Save this question and verified answer as a clean study sheet with live clickable link.
👥
Share with Friends & Study Groups
Challenge your peer aspirants on WhatsApp or Telegram to solve this question!
Online Test Series
Start Free Mock Test →Preparing for Mathematics?
Practice full-length mock tests with real exam timers, instant score analysis, and all-India ranking.
Chapter Practice
Practice Wave Optics and Acoustics MCQs →Want more practice questions on Wave Optics and Acoustics?
Solve complete topic-wise tests with detailed solutions on GkGet.
Related Practice Questions
Recommended practice questions in Mathematics · Wave Optics and Acoustics