A ray in diamond (n = 2.42) has a critical angle of 41.7 deg when trying to enter benzene. What is the index of refraction in benzene?

1.50

Explanation:

Given that:

C (critical angle) = 41.7°

n (index of refraction in benzene) = 2.42

n (index of refraction in benzene) = ?

To get the index of refraction in benzene, Apply the formula n = 1/sineC,

n = 1/sine41.7°

n = 1/sine 41.7°

n = (1/0.6652)

n = 1.50

Thus, the index of refraction for the ray in benzene is 1.50

electric field is a function of 1/r^2

yes, the force per unit charge for a point charge is inverse square law.

you'd use the equation that establishes a relationship between  energy  and  wavelength, which looks like this

e=h⋅cλ, where

λ  - the wavelength of the photon; c  - the speed of light, usually given as  3⋅108m/s; h  -  planck's constant, equal to  6.626⋅10−34j s

plug the value you were given for the energy of the photon in the above equation to get the wavelength

e=h⋅cλ⇒λ=h⋅ce

λ=6.626⋅10−34js⋅3⋅108ms−1.257⋅10−24j=1.581⋅10−1m