Optics Question 725
Question: Ray optics fails when
Options:
A) The size of the obstacle is 5 cm
B) The size of the obstacle is 3 cm
C) The size of the obstacle is less than the wavelength of light
D) (a) and (b) both
Show Answer
Answer:
Correct Answer: C
Solution:
Ray optics fails if the size of the object is of the order of the wavelength.