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Chapter 16: Problem 2281

Interference is possible in (A) light waves only (B) sound waves only (C) both light and Sound waves (D) none of these

Short Answer

Expert verified
Interference occurs in both light waves and sound waves, resulting in the superposition of the waves and the formation of constructive or destructive interference. Light waves exhibit interference patterns, such as those seen in Young's double-slit experiment, while sound waves experience changes in loudness due to interference. Therefore, the correct answer is (C) both light and Sound waves.

Step by step solution

01

Understanding Interference

Interference occurs when two or more waves superpose and combine to form a resultant wave with a displacement that is the sum of the displacements of the individual waves. Interference can be constructive, where the resulting wave has a larger amplitude than the original waves, or destructive, where the resulting wave has a smaller amplitude than the original waves.
02

Interference in Light Waves

Light waves are a type of electromagnetic wave. When two or more coherent light waves interfere, the result is a pattern of bright and dark spots called an interference pattern. This phenomenon is commonly observed in experiments such as Young's double-slit experiment. Therefore, we can conclude that interference is possible in light waves.
03

Interference in Sound Waves

Sound waves are longitudinal mechanical waves produced by the vibration of particles in a medium, such as air. When two or more sound waves interfere, they can either reinforce each other's amplitudes (constructive interference) or cancel each other's amplitudes (destructive interference). This can cause a change in the loudness of the sound, and the effect is often heard in everyday experiences, for example, when different speakers play sound simultaneously. Therefore, it is clear that interference is possible in sound waves as well.
04

Conclusion

Based on the understanding of interference and its occurrence in both light waves and sound waves, the correct answer is: (C) both light and Sound waves

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Most popular questions from this chapter

What is the time taken in seconds to cross a glass plate of thickness $6 \mathrm{~mm}\( and \)\mu=2.0$ by light ? (A) \(8 \times 10^{-11}\) (B) \(4 \times 10^{-11}\) (C) \(2 \times 10^{11}\) (D) \(16 \times 10^{-11}\)

The two coherent sources of intensity ratio \(\beta\) produce interference. The fringe visibility will be (A) \(2 \beta\) (B) \((\beta / 2)\) (C) \(\\{\sqrt{\beta} /(1+\beta)\\}\) (D) \(\\{(2 \sqrt{\beta}) /(1+\beta)\\}\)

\(\mathrm{n}^{\text {th }}\) bright fringe of red light $\left(\lambda_{1}=7500 \AA\right.\( ) Coincides with \)(\mathrm{n}+1)^{\text {th }}$ bright fringe of green light \(\left(\lambda_{2}=6000 \AA\right)\). The value of \(n=\) (A) 8 (B) 4 (C) 2 (D) 1

In young's double slit experiment the phase difference is constant between two sources is \((\pi / 2)\). The intensity at a point equidistant from the slits in terms of max. intensity \(\mathrm{I}_{0}\) is (A) \(3 \mathrm{I}_{0}\) (B) \(\left(\mathrm{I}_{0} / 2\right)\) (C) I_{0 } (D) \(\left(3 \mathrm{I}_{0} / 4\right)\)

A ray of light from denser medium strikes a rarer medium at angle of incidence i. The reflected and refracted rays make an angle of \(90^{\circ}\) with each other. The angle of reflection and refraction are r and \(\mathrm{r}^{\prime}\) respectively. The critical angle is (A) \(\sin ^{-1}(\tan i)\) (B) \(\tan ^{-1}(\tan \mathrm{r})\) (C) \(\tan ^{-1}(\sin i)\) (D) \(\sin ^{-1}(\tan \mathrm{r})\)
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