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Define the following terms used in reflection of light

asked Oct 17, 2017 in Physics by shamroz (41.5k points)

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What do you understand by reflection of light? Draw a diagram to illustrate reflection at a plane surface:

asked Oct 17, 2017 in Physics by sonia (36.5k points)

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Why ultrasound is useful in medical field.

asked Oct 17, 2017 in Physics by sonia (36.5k points)

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Will two separate 50 dB sounds together constitute a 100 dB sound? Explain.

asked Oct 17, 2017 in Physics by sonia (36.5k points)

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Is there any difference between echo and reflection of sound? Explain.

asked Oct 17, 2017 in Physics by sonia (36.5k points)

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Two people are listening to the same music at the same distance.

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A student says that the two terms speed and frequency of the wave refer to the same thing. What is your response?

asked Oct 17, 2017 in Physics by sonia (36.5k points)

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Why must the volume of a stereo in a room with wall-to-wall carpet be turned higher than in a room with a wooden floor?

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You can listen to your friend round a corner, but you cannot watch him/her. Why?

asked Oct 17, 2017 in Physics by sonia (36.5k points)

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We can recognize persons speaking with the same loudness from their voice. How is this possible?

asked Oct 17, 2017 in Physics by sonia (36.5k points)

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Why two tin cans with a string stretched between them could .

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What would happen to the loudness of sound with increase in.its frequency?

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Which property of sound waves determines its (a) Ioudness (b) pitch?

asked Oct 17, 2017 in Physics by sonia (36.5k points)

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Why the voice of women is more shrill than that of men?

asked Oct 17, 2017 in Physics by sonia (36.5k points)

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Suppose you and your friend are on the moon. Can you be able to hear any sound produced by your friend?

asked Oct 17, 2017 in Physics by sonia (36.5k points)

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Why are sound waves called mechanical waves?

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Explain how sound is produced by a school bell?

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How are Cracks detected in the interior of moving parts of high speed heavy machines?

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How is depth of water measured by echo method?

asked Oct 17, 2017 in Physics by sonia (36.5k points)

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What are the uses of ultrasound in medicine?

asked Oct 17, 2017 in Physics by shamroz (41.5k points)

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