Question

The wave length of light diminishes "mu"(sign of refractive index) times (mu = 1.33 for water) in a medium. A diver from inside water looks at an object whose natural color is green. He sees the object as:
a)red
b) blue
c) green
d) yellow

Answer 1

I think it is "Blue", because, since the velocity and wavelength of light decreases in water as compared to air, so, blue component of spectrum has less wavelength and velocity than green. All other colors as given in the options have wavelength and velocity more than green light.

Answer 2

Please correct me if I am wrong and help me with apt reason. I will be highly thankful and grateful.

Answer 3

http://www.deep-six.com/page77.htm
yes u r right
blue color manages to survive through depth having more wavelength

Answer 4

we know that frequency is fundamental quantity,and it does not depend on any medium:
Hence: