A beam of light strikes the surface of water at an incidence angle of 60°. Determine the directions of the reflected and refracted rays. For water, n=1.33.
A- (a) 30° reflected into air, (b) 22° refracted into water
B- (a) 60° reflected into air, (b) 41° refracted into water
C- (a) 90° reflected into air, (b) 60° refracted into water
D- (a) 41° reflected into air, (b) 30° refracted into water
The correct answer is B- (a) 60° reflected into air, (b) 41° refracted into water.
When light travels from one medium to another, the angle of incidence (the angle between the incident ray and the normal to the surface) is equal to the angle of reflection (the angle between the reflected ray and the normal), and the ratio of the sines of the angles of incidence and refraction is equal to the ratio of the velocities of light in the two media. This is known as Snell's law.
Using Snell's law, we can calculate the angle of refraction:
sin(60°)/sin(90°) = 1.33/1
sin(r)/sin(90°) = 1/1.33
sin(r) = sin(90°)/1.33
sin(r) = 0.7519
r = sin^-1(0.7519)
r = 48.93°
So the refracted ray makes an angle of 48.93° with the normal.
The angle of reflection is equal to the angle of incidence, so the reflected ray makes an angle of 60° with the normal.
A beam of light strikes the surface of water at an incidence angle of 60°. Determine...
Light in the air (n1= 1) strikes the surface of a lake (n2= 1.33 for water), making an angle of 37orelative to vertical. The RMS value of the magnetic field in the incident light is 1.65x10-7T. a) What is the angle (relative to vertical) of the reflected beam? b) What is the angle (relative to vertical) of the refracted beam? c) What is the average intensity of the incident light?
a scuba diver shines a flashlight from beneath the surface of water (n=1.33) such that the light strikes the water-air boundary with an angle of incidence of 43.at what angle is the beam refracted?
9) (15 pts) Light in air (n = 1) strikes the surface of a lake (n2 = 1.33 for water), making an angle of 37º relative to vertical. The rms value of the magnetic field in the incident light is 1.65x10-?T. a) (5 pts) What is the angle (relative to vertical) of the reflected beam? b) (5 pts) What is the angle (relative to vertical) of the refracted beam? c) (5 pts) What is the average intensity of the incident...
A beam of light in air strikes a piece of glass (n = 1.61) and is partially reflected and partially refracted. Find the angle of incidence if the angle of reflection is twice the angle of refraction.
Question 2 20 points A ray of light from air is incident on the surface of the water and is reflected and refracted. If the angle of refraction is 30° and the index of refraction for water is 1.33 what is the angle in degrees between the reflected and refractad rays?
A ray of light strikes the surface of water (n = 1.33) at an angle of 60.0° from the water surface. What is the angle of refraction? ***Don’t forget to measure angle from the normal*** Question 9 options: a) 30.0° b) zero c) 22.1° d) 60.0°
The index of refraction for red light in water is 1.331 and that for blue light is 1.340. If a ray of white light enters the water at an angle of incidence of 61.55o, what are the underwater angles of refraction for the blue and red components of the light? (Enter your answers to at least two decimal places.) (a) blue component (b) red component Need Help? Read It The light beam shown in the figure below makes an angle...
A beam of light traveling in air enters a pool of water. If the angle of refraction is 41 ∘ and the index of refraction of water is 1.33, what is the angle of incidence?
water interface (the surface of the lake), it is partly reflected back into the air and partly refracted or transmitted into the water. This explains why on the surface of a lake sometimes you see the reflection of the surrounding landscape and other times the underwater vegetation. These effects on light propagation occur because light travels at different speeds depending on the medium. The index of refraction of a material, denoted by n, gives an indication of the speed of...
The light beam in the figure below strikes surface 2 at the critical angle, θc = 42°. Determine the angle of incidence, θi. °