Which of the following change is observed when light travels from air to glass?
Answer & explanation
Correct answer: option 4
The correct answer is Option (4) → wavelength and speed of light only
The speed of light decreases when it enters a denser medium like glass.
$v=\frac{c}{μ_0}$
The wavelength also decreases as,
$λ=\frac{v}{f}=\frac{c}{fμ_0}$