23. Which wave has the same frequellt a. wave lB b. wave C c. wave D 24. Compare

Question

23. Which wave has the same frequellt a. wave lB b. wave C c. wave D 24. Compared to wave A, which two waves have greater frequencies? a. waves B and C b, waves B and D c. waves Cand D 25. The pitch of a musical sound depends on the sound wave's a. wavelength. b. frequency c. speed. d. amplitude e. all of these. 26. A Doppler effect occurs when a source of sound moves a. toward you. b. away from you c, both of these. d. none of these. 27. Derived units are best defined as: A. measurements made using electronic equipment. B. units containing an exponent such as m2 C. measurements based on a non-metric system Study the four transverse waves shown above. Compare the properties of waves B, C, and D to that of wave A, and complete the following four questions:

Explanation / Answer

23) A and D has same frequency.

Wavelengths are same hence frequencies are same but A has more amplitude.

B and C also has the same frequency.

Frequency of B and C is greater than A and D.

24) option a) frequency of B and C is greater than A. Because their wave length is short.

25) pitch of musical sound depends on frequency.

For kids and women pitch is more than a men

26) Doppler effect is due to relative motion between source and observer.

If both are approaching or going away we can identify Doppler effect.

Hence option c) both of these, towards you or away from you.

26) combination of fundamental units are derived units.

Option B and C

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