Question

The wavelengths for the light of red and blue colours are distinctly different. In this context, consider the following statements:
1. In vacuum, both red and blue colours have same speed
2. In glass, the speed of red colour is more than blue colour
Which among the above statements is / are correct?
[A] Only 1 is correct
[B] Only 2 is correct
[C] Both 1 & 2 are correct
[D] Neither 1 nor 2 is correct

Answer 1

Answer:

I think option number ( D ) is correct answer..

Answer 2

The correct option is [C] Both 1 & 2 are correct.

The wavelengths for the light of red and blue colours are distinctly different, then the below statements are correct.

1. In vacuum, both red and blue colours have same speed.
2. In glass, the speed of red colour is more than blue colour.

Both move at the same speed in a vacuum. (b) The wavelength of light grows as the speed of light does. The wavelength of the red colour (7.8 x 10-7 m) is greater than the wavelength of the blue colour when we look at the given numbers (4.8 x 10-7 m).

Thus, option C is the correct option.

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