A red colour in air has wavelength 760 nm when light passes through water of refractive index (n-(4/3)), wavelength becomes 570 nm. (wavelength of yellow colour in air is 570 nm ). Then colour of red light in water is

Question

A red colour in air has wavelength 760 nm when light passes through water of refractive index (n-(4/3)), wavelength becomes 570 nm. (wavelength of yellow colour in air is 570 nm ). Then colour of red light in water is (A) Red (B) Green (C) Yellow (D) Blue

Tardigrade Admin · Accepted Answer

Colour of a wave depends more on frequency than wavelength as it depicts the amount of energy is carries. Since frequency and energy doesnot change it will simply remain red.

Q. A red colour in air has wavelength 760nm when light passes through water of refractive index (n−34​), wavelength becomes 570nm. (wavelength of yellow colour in air is 570nm ). Then colour of red light in water is

Red

Green

Yellow

Blue

Colour of a wave depends more on frequency than wavelength as it depicts the amount of energy is carries. Since frequency and energy doesnot change it will simply remain red.

Q. A red colour in air has wavelength $760 nm$ when light passes through water of refractive index $(n - \frac{4}{3})$ , wavelength becomes $570 nm$ . (wavelength of yellow colour in air is $570 nm$ ). Then colour of red light in water is