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MCQ Beats, Class 11 Physics

1. There will be total 10 MCQ in this test.
2. Please keep a pen and paper ready for rough work but keep your books away.
3. The test will consist of only objective type multiple choice questions requiring students to mouse-click their correct choice of the options against the related question number.
4. No negative marking for incorrect choice.
5. Please click on “Finish the Test” when you want to exit.
6. All the best – Happy Studying

1. Two guitar strings A and B are slightly out of tune and produce beats of frequency 6Hz.The tension of the string found to decrease to 4 Hz. What is the original frequency of B if the frequency of a is 430Hz?

Question 1 of 10

2. When two tuning forks are sounded together 4 beats are heard per second. One tuning fork is of frequency 346 Hz. When its prong is loaded with a little wax, the number of beats is increased to 6 per second. The frequency of the other fork is:

Question 2 of 10

3. What material is tuning fork made of and why?

Question 3 of 10

4. Phenomenon of beats is not used in

Question 4 of 10

5. For the formation of distinct beats, the frequencies of two sources of sound should be

Question 5 of 10

6. On adding two sine waves that are exactly the same, what would be the result?

Question 6 of 10

7. Time interval between two successive maxima of sound waves with frequencies v1and v2 is given by
Beats Multiple Choice Questions for CBSE Class 11 Physics   Topperlearning

Question 7 of 10

8. Two sound sources fixed at a given distance apart are emitting sound each of wavelength λ. A Listener moves with a velocity v0 along the line joining the two sources , the number of beats heard by him per second is

Question 8 of 10

9. Pure sound notes from two sources make the molecules of air at a location vibrate simple harmonically in accordance with the equations.
y1 = 0.008 sin (604 n t) and
y2 = 0.007 sin (610 n t) respectively.
The number of beast heard by a person at the location will be:

Question 9 of 10

10. Two tuning forks are struck and the sounds from each reach your ears at the same time. One sound has a frequency of 256 Hz, and the second sound has a frequency of 258 Hz. The underlying beat frequency is:

Question 10 of 10

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