⇦ | ⇨ |
A source of unknown frequency gives 4 beats/s, when sounded with a source harmonic of the source of unknown frequency gives 5 beats/s, when sounded with a source of frequency 513 Hz. The unknown frequency is
Options
(a) 246 Hz
(b) 240 Hz
(c) 260 Hz
(d) 254 Hz
Correct Answer:
254 Hz
Explanation:
When sounded with a source of known frequency fundamental frequency = 250 +- 4 Hz. = 254 Hz or 246 Hz. second harmonic if unknown frequency (suppose) 254 Hz = 2 x 254 = 508 Hz. As it is gives 5 beats 508 + 5 = 513 Hz.
Hence, unknown frequency is 254 Hz.
Related Questions: - The weight of a body on surface of earth is 12.6 N. When it is raised to a height
- When 10¹⁹elecrons are removed from a neutral metal plate through some process,
- α-particles, deuterons and protons of same energy are moving in a perpendicular
- A perfect gas at 27° C is heated at constant pressure to 327° C. If original volume of gas
- Two tuning forks are sounded together and produce 2 beats per second.
Topics: Waves
(80)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- The weight of a body on surface of earth is 12.6 N. When it is raised to a height
- When 10¹⁹elecrons are removed from a neutral metal plate through some process,
- α-particles, deuterons and protons of same energy are moving in a perpendicular
- A perfect gas at 27° C is heated at constant pressure to 327° C. If original volume of gas
- Two tuning forks are sounded together and produce 2 beats per second.
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