Physics
Grade-10
Easy
Question
As the wavelength of the incident light increases, the deviation in its path on getting refracted through a prism ____.
- Increases
- Decreases
- Stays the same
- Becomes zero
Hint:
angle of deviation decreases with increase in wavelength.
The correct answer is: Decreases
Shorter wavelengths travel more slowly through the prism and hence are further deviated as compared to longer wavelengths. Hence, angle of deviation decreases with increase in wavelength.
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