When the wheel of a cart rolls from a smooth sidewalk onto a plot of grass, the interaction of the wheel with blades of grass slows the wheel. What slows light when it passes from air into glass or water?

Q: Give an example of total internal reflection.

A: Total internal Reflection: When light goes from a denser medium to a rarer medium, at an angle of…

Q: Are angle of incidence and angle of reflection still equal in concave and convex mirrors?

A: To find: Are angle of incidence and angle of reflection still equal in concave and convex mirrors?

Q: Solve for the speed of light in each of the following materials:   Air Glass Water

A: The speed of light is given as c=3×108 m/s

Q: A flashlight at the bottom of a swimming pool shines upward at an angle with the surface, as in the…

A:

Q: What happens to an image when the object is on top of the focal point of a converging lens?

A:

Q: if you have a screen set up at the location of an image, what happens to the image you see on the…

A:

Q: Why is mirror fixed on a microscope?

A: Mirror mounted in a microscope to reflect light on the substance to be observed. The portion fixed…

Q: What is the angle of incidence in the glass? Answer in units of °.

A:

Q: why a concave lens is called a converging or negative lens?

A: It is thin in the middle and converges light at a point. When the rays of light coming parallel to…

Q: When a beam of white rays is dispersed by a prism which colour will be refracted to a larger extent

A:

Q: If you see a fish in the water should you cast to the image behind it or in front of it so you bait…

A: Since the refractive index of water is greater than air, therefore the light ray will bend inward…

Q: A ray of light strikes the boundary between glass and water, as shown below. The angle of refraction…

A: Given data:  Angle of incident (θ1) = 75° nglass = 1.50 nwater = 1.33 Required: Angle of refraction

Q: The variation of index of refraction with a wavelength is called _________________, and it exists…

A: The variation of index of refraction with a wavelength is called dispersion.

Q: speed of light is slower in glass than in water) Air glass Air water

A:

Q: if the object is moved closer to the lens, what happens to the image formed by convex lens?

A: Convex lens is thinner from the end and it is thicker from the middle.

Q: True or False: The Law of Reflection applies to diffuse reflection only.

A: Reflection off of rough surfaces  known as diffuse reflection. but the nature of the surface has…

Q: When your eye is submerged in water, does the speed of light increase, decrease, or remain constant…

A: The refractive index of cornea is 1.376, while that of water is 1.33.

Q: The image produced on the retina of the eye is _____compared to the object being viewed.(a)…

A: The cornea and the eye lens in the eye anatomy together comprise a system that almost behaves as a…

Q: When you looks at your image in a bathroom mirror it is?   virtual or real reduced or same size…

A: Bathroom mirror is a plane mirror.

Q: A converging lens with a focal length of 4.0 cm is to the left of a second identical lens. When a…

A: Apply the lens equation to determine the distance of the image produced by the first lens.

Q: If the angle of incidence is 30 degrees the angle of reflection is __________ degrees.

A: According to the laws of reflection, the angle of incidence is equal to the angle of reflection.

Q: Will the angle of incidence and angle of reflection in a smooth surface change when it is reflected…

A: Let the angle of incidence in case of smooth surface = i Let the angle of reflection in case of…

Q: Give practical applications of total internal reflection?

A: To explain: Practical applications of total internal reflection.

Q: If a nearsighted person wants thinner eyeglasses, is a higher or lower index of refraction for the…

A: A near sighted person can’t see objects that are farther, as the light rays are focused in front of…

Q: A boy runs towards a mirror at a speed 10 m/s The speed of the image relative to the man is.

A: Speed of the boy towards the mirror is 10 m/s. The image will also run at the same speed. So, the…

Q: Light strikes a block of glass as shown below. Which path will it follow as it transmits into the…

A: We assume that medium above the glass, in which the incident ray travels, is air.

Q: If a toddler crawls towards a mirror at a rate of 0.25 m/s, then at what speed will the toddler and…

A: It is given that the toddler is moving towards the mirror with a speed of,

Q: what is the reason behind the disappearing glass

A: Glass objects are visible because they reflect some of the light that shines on them and bend or…

Q: What is meant by “critical angle” in regard to total internal reflection?

A: CRITICAL ANGLE: It is the angle of incidence when light comes from denser to rarer media interface…

Q: When an object is placed at F in front of a convex lens, then the image will be formed _____________…

A:

Q: What happens when you place the lens of the eye over a newspaper page?

A: if you place your eye over a newspaper page the text seems a blur. One reason for that is, the near…

Q: For each angle of incidence, the corresponding value of angle of reflection is same different can be…

A:

Q: Where  is the image formed by eyeglasses?

A: For eyeglasses, the image formed acts as object for eye lens, so that final image is formed at…

Q: If the object is 10cm tall and its image is 5cm tall. Is it enlarged, remain or reduce?

A: Object distance=10cm Image distance=5cm

Q: Total internal reflection can take place when light travels from   A) Air to glass B) Air to water…

A: D) Diamond to glass is the correct answer

Q: When an illuminated object is held in front of a thick plane glass mirror, several images are seen,…

A: A number of images can be seen when an illuminated object is held in front of a thick plane glass…

Q: Why is a mirror image reversed?

A:

Dispersion of White Light

Snell’s law is a formula that gives a relation between the angle of incidence and angle of refraction and is given as: