Optics B/C

[Fluorine]

Okay question...
The apex angle of a prism is 50.0 and the index of refraction of the prism material is 1.66. Calculate the minimum deviation angle?

[John Richardsim]

Okay question...
The apex angle of a prism is 50.0 and the index of refraction of the prism material is 1.66. Calculate the minimum deviation angle?

Haven't done much with this yet so let's hope I did it right... (Click to Show Hidden Text)

39.1 degrees

[Fluorine]

Okay question...
The apex angle of a prism is 50.0 and the index of refraction of the prism material is 1.66. Calculate the minimum deviation angle?

Haven't done much with this yet so let's hope I did it right... (Click to Show Hidden Text)

39.1 degrees

Yep you got it! The formula can be annoying to solve in reverse but as long as your careful not too bad.

[John Richardsim]

Which type of lens is used to correct nearsightedness?

[0ddrenaline]

Which type of lens is used to correct nearsightedness?

Answer (Click to Show Hidden Text)

Diverging lens. Nearsightedness is the result of light focusing before it reaches the retina, so the lens must cause the light to diverge before it hits the eye.

[John Richardsim]

Which type of lens is used to correct nearsightedness?

Answer (Click to Show Hidden Text)

Diverging lens. Nearsightedness is the result of light focusing before it reaches the retina, so the lens must cause the light to diverge before it hits the eye.

Yep.

[0ddrenaline]

Light travels from a material whose index of refraction is into another material whose index of refraction is . The opposite parallel surface of the second material is exposed to the air. (a) Find the critical angle at which light will be reflected at the interface of the materials. (b) Find the angle at which the light will pass through the interface and then be reflected at the opposite surface of the second material.

[John Richardsim]

Light travels from a material whose index of refraction is into another material whose index of refraction is . The opposite parallel surface of the second material is exposed to the air. (a) Find the critical angle at which light will be reflected at the interface of the materials. (b) Find the angle at which the light will pass through the interface and then be reflected at the opposite surface of the second material.

Answer (Click to Show Hidden Text)

a. 51 degrees
b. 19 degrees

[0ddrenaline]

Light travels from a material whose index of refraction is into another material whose index of refraction is . The opposite parallel surface of the second material is exposed to the air. (a) Find the critical angle at which light will be reflected at the interface of the materials. (b) Find the angle at which the light will pass through the interface and then be reflected at the opposite surface of the second material.

Answer (Click to Show Hidden Text)

a. 51 degrees
b. 19 degrees

Correct

[John Richardsim]

Use c=3.00*10^8

What is the wavelength (in nm) of light with a frequency of 4.40*10^2 THz? What color of visible light does this correspond to?