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Question
When a beam of light from air enters into the water, the characteristics of light wiil not be changed, is :
When a beam of light from air enters into the water, the characteristics of light wiil not be changed, is :
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Solution
The correct option is A frequency
When electromagnetic wave enters into any other medium, its electric component induces dipole in the molecule of the medium. These dipoles have oscillating dipole moment and its time period is the same as inducing electric field of incoming wave. These dipole in turn radiates electromagnetic wave having same time period. So, in this phenomenon, time period or frequency of the wave remains unaltered.
When electromagnetic wave enters into any other medium, its electric component induces dipole in the molecule of the medium. These dipoles have oscillating dipole moment and its time period is the same as inducing electric field of incoming wave. These dipole in turn radiates electromagnetic wave having same time period. So, in this phenomenon, time period or frequency of the wave remains unaltered.
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