If a light ray travels from denser to rarer medium. Which of the following statement/s are correct?
(A) Energy increases
(B) Frequency remain same
(C) Phase changes by 90°
(D) Velocity increases
(E) Wavelength decreases
Choose the correct answer from the options given below :
1
(B) only
2
(B) and (D) only
3
(A) and (C) only
4
(E) only