Question

A ray of light travelling in air have wavelength $\lambda$ , frequency n , velocity v and intensity I. If this ray enters into water then these parameters are ${\lambda}$' n ' , v ' and I' respectively. Which relation is correct from following?

• A. $\lambda= {\lambda} '$
• B. n=n '
• C. v=v'
• D. I = I'

Answer 1

Answer: (B)

n=n '

Answer 2

Frequency remains same.