Question

Which statement given BEST describes what happens to light as it passes from air into a piece of glass?a) The speed increases, its wavelength becomes longer, and its frequency decreases.b)The speed increases, its wavelength becomes longer, and its frequency remains the same.c) The speed decreases, its wavelength becomes shorter, and its frequency remains the same.d) The speed decreases, its wavelength becomes shorter, and its frequency increases.

Answer 1

Given that the light passes from air to glass, that means it enters to denser medium from rarer medium.

Here, air is the rarer medium and glass is the denser medium.

Speed decreases when light enters from rarer to densr medium , while the frequency remains the same and its wavelength becomes shorter.

Thus, option C is correct.