| ⇦ | 
| ⇨ |
Sound waves travel at 350m/s through a warm air and at 3500 m/s through brass. The wavelength of a 700 Hz acoustic wave as it enters brass from warm air
Options
(a) decreases by a factor 10
(b) increases by a factor 20
(c) decreases by a factor 20
(d) increases by a factor 10
Correct Answer:
decreases by a factor 20
Explanation:
We have, v = nλ ⇒ v ∞ λ (as n remains constant)
Thus, as v increases 10 times, λ also increases 10 times.
Related Questions: - Hydrogen atom in ground state is excited by a monochrmatic radiation of λ=975 Å
- A particle of mass m is projected with a velocity v making an angle of 45°
- The drift velocity of free electrons in a conductor is v, when a current
- In the adiabatic compression, the decrease in volume associated with
- A small signal voltage V(t)=V₀ sin ωt is applied across an ideal capacitor C
Topics: Waves
(80)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- Hydrogen atom in ground state is excited by a monochrmatic radiation of λ=975 Å
- A particle of mass m is projected with a velocity v making an angle of 45°
- The drift velocity of free electrons in a conductor is v, when a current
- In the adiabatic compression, the decrease in volume associated with
- A small signal voltage V(t)=V₀ sin ωt is applied across an ideal capacitor C
Topics: Waves (80)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
18000+ students are using NEETLab to improve their score. What about you?
Solve Previous Year MCQs, Mock Tests, Topicwise Practice Tests, Identify Weak Topics, Formula Flash cards and much more is available in NEETLab Android App to improve your NEET score.
Share this page with your friends
Leave a Reply