Single Choice

Which of the following is not a correct statement.

AThe wavelength of red light is greater than the wavelength of green light
BThe wavelength of blue light is smaller than the wavelength of orange light
CThe frequency of green light is greater than the frequency of blue light
Correct Answer
DThe frequency of violet light is greater than the frequency of blue light

Solution

Velocity of light,c=νλ, where ν is the frequency of the light and λ is the wavelength.
Wavelength of Green light(λg) is 550 nm and Wavelength of Blue light(λb)is 450nm. So λg>λb.
Hence, νg<νb. The frequency of green light is not greater than the frequency of blue light.

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