Monochromatic ble light that has a frequency of 6.5x10^14 hz enters a piece of flint glass.?

Question

What are the frequency and wavelength of the light in the glass?

Answer 1

First the frequency and energy never changes when you change material. The light can be absorbe but no change in the frequency so answer 6.5*10^14Hz

wave length
in air wavelength = c/n * frequency
c= 3 *10^8 m/s

so wavelength =3*10^8/(6.5*10^14*n)=(4.615*10^-7/n) in meter

as you did not give n I can not finish
to finish divide 4.615*10^-7 by n

Answer 2

Well, whenever light enters another substance, the frequency remains the same. However, the speed of light will be different in this new substance.

Remember that the frequency*wavelength = speed_of_light

If you can figure out the speed of light of the flint glass, then you can easily solve for the new wavelength. Perhaps this is available in a table in your physics book? If not, consider looking it up online. (Although, candidly, your physics book is a better resource, because these constants typically vary from source-to-source, so its best to use a common source like your textbook.)