| ⇦ | 
| ⇨ |
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: - Small drops of the same size are charges to V volt each. If n such drops coalesce
- A block of mass 10 kg is moving in X-direction with a constant speed of 10 ms⁻¹
- An electric dipole is placed at an angle 30°with an electric field intensity 2×10⁵N/C.
- A body, which emits radiations of all possible wavelengths, is known as
- A capacitor of 2.5 μF is charged through a resistor of 4 MΩ. In how much time
Topics: Waves
(80)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- Small drops of the same size are charges to V volt each. If n such drops coalesce
- A block of mass 10 kg is moving in X-direction with a constant speed of 10 ms⁻¹
- An electric dipole is placed at an angle 30°with an electric field intensity 2×10⁵N/C.
- A body, which emits radiations of all possible wavelengths, is known as
- A capacitor of 2.5 μF is charged through a resistor of 4 MΩ. In how much time
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