Recent questions tagged Cbse

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Q: A pipe is open at both ends. What should be its length such that it resonates a 10Hz source in the 2nd harmonic? Speed of sound in air = 340m/s.

asked Oct 3, 2021 in Class-XI-PHYSICS by AdilsonLima

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Q: Consider standing waves in an air column with one end closed. What is a pressure node?

asked Oct 3, 2021 in Class-XI-PHYSICS by AdilsonLima

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Q: A pipe open at both ends has a fundamental frequency of 2Hz. If the pipe is closed at one end and half filled with water, what will be the fundamental frequency?

asked Oct 3, 2021 in Class-XI-PHYSICS by AdilsonLima

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Q: Standing waves can be produced when two identical waves, having a phase difference of π, are travelling in the same direction. True or False?

asked Oct 3, 2021 in Class-XI-PHYSICS by AdilsonLima

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Q: Consider the phenomenon of beats & select the correct statement.

asked Oct 3, 2021 in Class-XI-PHYSICS by AdilsonLima

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Q: Let’s say we can hear a beat frequency of 2Hz from two tuning forks. The first tuning fork has a frequency of 100Hz. If wax is applied on the 2nd tuning fork, the beat frequency becomes 4Hz,

asked Oct 3, 2021 in Class-XI-PHYSICS by AdilsonLima

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