| ⇦ | 
| ⇨ |
When a string is divided into three segments of length l₁, l₂ and l₃ the fundamental frequencies of these three segments are v₁, v₂ and v₃ respectively. The original fundamental frequency (v) of the string is
Options
(a) √v = √v₁ + √v₂ + √v₃
(b) v = v₁ + v₂ + v₃
(c) 1/v = 1/v₁ + 1/v₂ + 1/v₃
(d) 1/ √v = 1/ √v₁ + 1/ √v₂ + 1/ √v₃
Correct Answer:
1/v = 1/v₁ + 1/v₂ + 1/v₃
Explanation:
Fundamental frequency is given by v = 1/ 2l √(T / µ)
⇒ v ∞ 1/ l ⇒ P ∞ 1 / v Since, P divided into l₁, l₂ and l₃ segments.
Here, l = l₁ + l₂ + l₃
So, 1/v = 1/v₁ + 1/v₂ + 1/v₃
Related Questions: - A thin glass(refractive index 1.5) lens has optical power of -5D in air.
- A,B and C are voltmeters of resistance R, 1.5 R and 3R respectively, as shown
- Time period of the rotation of the earth about its own axis is 24 hour
- A photoelectric surface is illuminated successively by monochromatic light of wavelength
- The difference in the lengths of a mean solar day and a sidereal day is about
Topics: Waves
(80)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- A thin glass(refractive index 1.5) lens has optical power of -5D in air.
- A,B and C are voltmeters of resistance R, 1.5 R and 3R respectively, as shown
- Time period of the rotation of the earth about its own axis is 24 hour
- A photoelectric surface is illuminated successively by monochromatic light of wavelength
- The difference in the lengths of a mean solar day and a sidereal day is about
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