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2021 BGCSE Physics Paper-1 Question-45
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Q-50
The diagram shows the dispersion of white light by a glass prism. Why does the dispersion occur when the white light enters the glass?
The frequency of red light decreases more than that of violet light.
The frequency of violet light decreases more than that of red light.
The speed of red light decreases more than that of violet light.
The speed of violet light decreases more than that of red light.
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