class 11th physics notes
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Q9/10: What is the fundamental frequency of a closed organ pipe of length L?
Anonymous Quiz
27%
v / L
35%
v / (2 * L)
25%
v / (4 * L)
8%
2 * v / L
Q10/10: If the tension in a stretched string is increased by 4 times, the speed of transverse waves on it will?
Anonymous Quiz
17%
Remain the same
33%
Double
25%
Halve
20%
Quadruple
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Q1/10: Newton's formula for the speed of sound in a gas was corrected by which scientist?
Anonymous Quiz
31%
Einstein
25%
Maxwell
25%
Laplace
13%
Boyle
Q2/10: When a transverse wave reflects from a rigid boundary, what is the phase difference between the incident and reflected waves?
Anonymous Quiz
22%
Zero
25%
Pi/2 radians
37%
Pi radians
13%
2*Pi radians
Q3/10: Two sound waves of frequencies 256 Hz and 260 Hz are sounded together. What is the beat frequency?
Anonymous Quiz
22%
516 Hz
35%
4 Hz
33%
258 Hz
8%
2 Hz
Q5/10: In an open organ pipe, the ratio of frequencies of the harmonics present is?
Anonymous Quiz
36%
1:3:5:7...
23%
1:2:3:4...
28%
2:4:6:8...
13%
1:4:9:16...
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Q7/10: A source and an observer are moving towards each other, each with a speed equal to half the speed of sound. The apparent frequency will be?
Anonymous Quiz
34%
Double the original frequency
18%
Triple the original frequency
27%
Half the original frequency
21%
Same as the original frequency
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Q8/10: An open organ pipe has fundamental frequency f. If it is dipped vertically in water such that half its length is submerged, the new fundamental frequency will be?
Anonymous Quiz
30%
f / 2
32%
f
27%
2 * f
10%
4 * f
Q9/10: The equation of a wave is y = A sin(kx - wt). The maximum particle velocity is equal to the wave velocity if?
Anonymous Quiz
23%
A = wavelength
24%
A = wavelength / Pi
37%
A = wavelength / (2*Pi)
15%
A = 2 * Pi * wavelength
Q10/10: Two waves of the same frequency produce interference. The ratio of maximum to minimum intensity is 9:1. What is the ratio of their amplitudes?
Anonymous Quiz
35%
3:1
38%
9:1
18%
2:1
3%
4:1
❀1
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class 11th physics notes
πŸ“š ALL SUBJECTS PREMIUM BOOKS | SESSION 2026–27πŸš€ Start your preparation for the new CBSE Session 2026–27 with the best study books & question banks! πŸ’― ✨ Read these books completely and solve every question. With consistent practice, scoring 90–95%+ is absolutely…
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