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When the stem of a vibrating tuning fork...

When the stem of a vibrating tuning fork is gently pressed on the surface of a table louder sound is heard. Why?

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Forced vibrations are produced on the surface of the table
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Name the phenomenon that cause a loud sound when the stem of a vibration tuning fork is kept pressed on the surface of a table.

The stem of a vibrating tuning fork is pressed against a table top. Will it produce an audible sound ?

In Fig. , A, B, C and D represent the test tubes each of height 20 cm which are filled with water up to heights of 12 cm, 14 cm, 16 cm and 18 cm respectively. If a vibrating tuning fork is placed over the mouth of test tube D, a loud sound is heard. Describe the observations with the tubes A, B and C when the vibrating tuning fork is placed over the mouth of these tubes.

The stem of a vibrating tuning fork is pressed against a table top. Under what condition does it lead to resonance ?

The diagram above shows a wire stretched over a sonometer. Stems of two vibrating tuning forks A and B are touched to the wooden box of the sonometer. It is observed that the paper rider (a small piece of paper folded at the centre) present on the wire flies off when the stem of vibrating tuning fork B is touched to the wooden box but the paper just vibrates when the stem of vibrating tuning fork A is touched to the wooden box. Why does the paper rider fly off when the stem of tuning fork B is touched to the box ?

The diagram below shows a wire stretched over a sonometer. Stems of two vibrating tuning forks A and B are touched in turn to the wooden box of the sonometer. It is observed that the paper rider (a small piece of paper folded at the centre) present on the wire flies off when the stem of vibrating tuning fork B is touched to the wooden box but the paper just vibrates when the stem of vibrating tuning fork A is touched to the wooden box. Name the phenomenon when the paper rider just vibrates.

The diagram above shows a wire stretched over a sonometer. Stems of two vibrating tuning forks A and B are touched to the wooden box of the sonometer. It is observed that the paper rider (a small piece of paper folded at the centre) present on the wire flies off when the stem of vibrating tuning fork B is touched to the wooden box but the paper just vibrates when the stem of vibrating tuning fork A is touched to the wooden box. Name the phenomenon when the paper rider flies off.

The stem of a vibrating tuning fork is pressed against a table top. Does it cause the table top to set in vibrations ? If yes, what type of vibrations are they?

When a vibrating tuning fork is placed on a sound box of a sonometer, 8 beats per second are heard when the length of the sonometer wire is kept at 101cm or 100cm. Then the frequency of the tuning frok is (consider that the tension in the wire is kept constant)

When one of the prongs of a tuning fork is slightly broken at the top, the intensity of sound will

ICSE-SOUND-EXERCISE -7(B)
  1. The diagram in Fig. shows the displacement time graph of a vibrating b...

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  2. The diagram in Fig. shows the displacement time graph of a vibrating b...

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  3. A tuning fork is vibrating in air. State whether the vibrations are na...

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  4. The diagram below shows the displacement-time graph for a vibrating bo...

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  5. What are forced vibrations ? Give one example to illustrate your answe...

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  6. When the stem of a vibrating tuning fork is gently pressed on the surf...

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  7. State two differences between natural and forced vibrations.

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  8. What is meant by Resonance ?

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  9. State the condition for the resonance to occur.

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  10. Complete the following sentence : Resonance is a special case of ........

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  11. State two differences between the forced and resonant vibrations.

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  12. Why is a loud sound heard at resonance ?

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  13. Fig. shows two tuning forks A and B of the same frequency mounted on...

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  14. A vibrating tuning fork, held over an air column of a given length wit...

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  15. In Fig. , A, B, C and D represent the test tubes each of height 20 cm ...

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  16. In Fig. , A, B, C and D represent the test tubes each of height 20 cm ...

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  17. In Fig. , A, B, C and D represent the test tubes each of height 20 cm ...

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  18. Marching soldiers are asked to break their steps while crossing a brid...

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  19. Explain, why stringed musical instruments, like the guitar, are provid...

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  20. How do you tune your radio set to a particular station ? Name the phen...

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