When a ray of light enters a glass slab from air

Question

When a ray of light enters a glass slab from air (A) its wavelength decreases (B) its wavelength increases (C) its frequency increases (D) neither its wavelength nor its frequency changes

Tardigrade Admin · Accepted Answer

λ=(v/f) In moving from air to glass, / remains unchanged while v decreases. Hence, λ should decrease.

Q. When a ray of light enters a glass slab from air

its wavelength decreases

its wavelength increases

its frequency increases

neither its wavelength nor its frequency changes

$λ = \frac{v}{f}$
In moving from air to glass, / remains unchanged while v
decreases. Hence, $λ$ should decrease.

Q. When a ray of light enters a glass slab from air

its wavelength decreases

its wavelength increases

its frequency increases

neither its wavelength nor its frequency changes

λ=fv​ In moving from air to glass, / remains unchanged while v decreases. Hence, λ should decrease.

$λ = \frac{v}{f}$
In moving from air to glass, / remains unchanged while v
decreases. Hence, $λ$ should decrease.