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13 March, 10:05

According to the doppler effect, what appears to happen when a light source moves closer to an observer?

The waves stretch and frequency appears to decrease.

The waves stretch and frequency appears to increase.

The electromagnetic waves appear more red in color.

The electromagnetic waves appear more blue in color.

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  1. 13 March, 10:17
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    The waves stretch and frequency appears to increase. the second one is correct
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