A laser beam passes through the air into a piece of plexiglass. Find out the possible change in property of the laser beam

The velocity decreases

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The wavelength increases

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The frequency decreases

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The period decreases

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None of the above is true

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Solution

The correct option is E The velocity decreases
When light enters into a plexiglass , its velocity and thus wavelength changes but the frequency remains constant because frequency is characterized by source of laser beam.

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A laser beam passes through the air into a piece of plexiglass. Find out the possible change in property of the laser beam

The correct option is E The velocity decreasesWhen light enters into a plexiglass , its velocity and thus wavelength changes but the frequency remains constant because frequency is characterized by source of laser beam.

The correct option is E The velocity decreases
When light enters into a plexiglass , its velocity and thus wavelength changes but the frequency remains constant because frequency is characterized by source of laser beam.