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(A): Sound wave can not be polarized. ...

(A): Sound wave can not be polarized.
(R): Polarisation is shown by transverse wave only.

A

Both 'A' and 'R' are true and 'R' is the correct, explanation of 'A'.

B

Both 'A' and 'R' are true and 'R' is not the correct explanation of 'A'

C

A' is true and 'R' is false

D

Both 'A' and 'R' are false

Text Solution

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The correct Answer is:
A
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AAKASH SERIES-WAVES-EXERCISE-IB (Assertion (A) & Reason (R) Type Questions)
  1. (A): Radio waves can be polarized (R): Sound waves in air longitudi...

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  2. (A): In adiabatic expansion, the temperature of gas must decrease. (...

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  3. (A): Sound wave can not be polarized. (R): Polarisation is shown by ...

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  4. (A): A tuning fork is made of an alloy of steel, nickel and chromium. ...

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  5. (A): Two arms of a tuning fork vibrate in same phase. (R): Each arm ...

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  6. (A): All the particles between two consecutive nodes vibrate in the sa...

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  7. (A): In a perfect stationary wave, there is no transfer of energy. (...

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  8. (A): For the formation of stationary waves the medium must be bounded ...

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  9. (A): In the case of a stationary wave, a person hear a loud sound at t...

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  10. (A): Velocity of particles, while crossing mean position (in stationar...

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  11. (A): In a longitudinal stationary wave a displacement node coincides w...

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  12. (A): A tuning fork produces sound of a single frequency when it is exi...

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  13. (A): When a stretched string vibrates in two segments, then all the vi...

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  14. (A): When a sitar and a violin play notes of the same intensity and fr...

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  15. A): An open organ pipe of certain length have the same fundamental fre...

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  16. (A): The maximum number of beats that the human ear can detect is "10'...

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  17. (A): Violet shift indicates that a star is approaching the earth. (R...

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  18. (A): Doppler effect is asymmetric in sound (R): In sound, apparent c...

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  19. (A): The apparent freequency remain same as the source of sound approa...

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  20. (A): When a source of sound passes us, whether it be a car horn or a t...

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