| ⇦ | 
| ⇨ |
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: - In n-type semiconductor, electrons are majority charge carriers
- If a steel wire of length l and magnetic moment M is bent into a semicircular arc,
- In a radioactive decay process, the negatively charged emitted β- particles are
- At what angle should the two forces 2P and √2 P act,so that the resultant force is P√10?
- If a body is rolling on the surface, its total energy will be
Topics: Waves
(80)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- In n-type semiconductor, electrons are majority charge carriers
- If a steel wire of length l and magnetic moment M is bent into a semicircular arc,
- In a radioactive decay process, the negatively charged emitted β- particles are
- At what angle should the two forces 2P and √2 P act,so that the resultant force is P√10?
- If a body is rolling on the surface, its total energy will be
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