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Delicious77 [7]
3 years ago
9

When waves enter a denser medium, they bend the normal. A) Toward B) Away From

Physics
2 answers:
Andreyy893 years ago
7 0
The answer is bend towards normal.
Licemer1 [7]3 years ago
7 0

Answer:

Option (A)

Explanation:

When a ray of light passes through one optical medium to another optical medium it deviates from its path. This phenomenon is called refraction.

The speed of light in different medium is different.

As light ray travel from rarer medium to denser medium the speed of light decreases.

Thus, it have to cover minimum path length and hence moves towards the normal.

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sweet [91]

Answer:

Noise cancelling headphones have a microphone which listens to the ambient noise. The headphone then processes the sound and provides a wave to produce destructive interference. This cancels the ambient noise.

Explanation:

First, let us understand what interference is. Interference is the phenomenon that occurs when two waves superpose to form a wave which has a different wavelength, frequency, amplitude than the original two waves. When the crest of one wave superposes with the other waves crest then this results in the amplitude increasing. This is known as constructive interference. When the crest of one wave superposes with the other waves trough then this results in the amplitude decreasing. This known as destructive interference.

Noise cancelling headphones have a microphone which listens to the ambient noise. The headphone then processes the sound and provides a wave to produce destructive interference. This cancels the ambient noise.

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Choose the correct option.
AlexFokin [52]

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a lump of putty and a rubber ball have equal mass. both are thrown with equal speed against a wall. the putty sticks to the wall
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The bouncy ball experiences the greater momentum change.

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-- The ball has momentum of " M in the direction away from the wall ".
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