A slab of glass with an index of refraction of 1.65 is submerged in a liquid with an index of refraction of 1.22. Light in the liquid is incident on the glass.
(a) Find the angle of refraction for the angle of incidence of 60°.
°

(b) Find the angle of refraction for the angle of incidence of 45°.
°

(c) Find the angle of refraction for the angle of incidence of 30°.

Explanation:

Given that,

Refractive index of glass, n₁ = 1.65

Refractive index of liquid, n₂ = 1.22

(a) We need to find the angle of refraction for the angle of incidence of 60°. It can be calculated using Snells law as :

r is the angle of refraction

(b)

r is the angle of refraction

Here, i = 45 degrees

(c)  

r is the angle of refraction

Here, i = 30 degrees

Hence, this is the required solution.

this is an example of "committed" time.

committed time, as contracted time, takes need over essential and available time since it is seen as profitable work. it alludes to the time allotted to keep up a home and family. at the point when a man is commuting using committed time this individual may feel that the drive is an obligation to family, for example, strolling youngsters to class or driving a mate to work. contracted and committed time clients may feel that their commute could really compare to the commute of important or leisure time clients on the grounds that their commute is profitable work. in this manner, they might be more disposed to pick a mechanized method of movement.  

when jerome paddle in flowing river towards east the net speed of jerome will increase

so the net speed of jerome will be given as

now the speed of paul will be same as it is given as he is running on the ground

so

so here we can say since the speed of jerome is more so he will win the race

now as we know the distance so the time difference is given as

so jerome will reach first and the time difference will be 203.55 s or 3.4 min