Q6/10: Assertion: Sound waves cannot be polarized. Reason: Sound waves are longitudinal in nature.
Anonymous Quiz
29%
Both are true, Reason is correct explanation
25%
Both are true, Reason is not correct explanation
22%
Assertion is true, Reason is false
19%
Assertion is false, Reason is true
5%
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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
0%
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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
2%
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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
1%
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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
6%
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class 11th physics notes
📚 ALL SUBJECTS PREMIUM BOOKS | SESSION 2026–27🚀 Start your preparation for the new CBSE Session 2026–27 with the best study books & question banks! 💯 ✨ Read these books completely and solve every question. With consistent practice, scoring 90–95%+ is absolutely…
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📚 ALL SUBJECTS PREMIUM BOOKS | SESSION 2026–27🚀
Start your preparation for the new CBSE Session 2026–27 with the best study books & question banks!💯
✨ Read these books completely and solve every question. With consistent practice, scoring 90–95%+ is absolutely possible!
✅ Updated as per the latest CBSE 2026–27 syllabus
🔹 Class 9 – https://tinyurl.com/9CBSEBOOKS
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