Optics Answers

A violet ray of light leaves a first medium at an angle of 0.79 radians to the normal and enters a second medium at 0 56 radians to the normal. Given that the refractive index of the second medium is 1.33. What is the refractive index of the first medium?

a student is only able to read the lecture notebook when it is held at 65.00cm from his eyes. what focal length and power must the lenses of his reading glasses have to bring his near point to the normal value

the critical angle at an air liquid interface is 50°. calculate the refractive index of the liquid

• An object with a mass of 3.50 kg moves in a straight line on a frictionless horizontal surface with a speed of 2.0 m/s. Find the kinetic energy and the net work done on the object to make it reach this speed if it started from rest.

A piece of iron placed on a block of wood makes it float lower in the water, If the iron were instead suspended beneath the wood, would it float as low, lower, or higher? Defend your answer.

If a piece of photographic film is placed at the location of a real image, the film will record

the image. Can this be done with a virtual image? How might one record a virtual image?

A spherical air bubble in water can function as a lens. Is it a converging or diverging lens? How is its focal length related to its radius?

When a T. rex pursues a jeep in the movie Jurassic Park, we see a reflected image of the T. rex via a side-view mirror, on which is printed the (then darkly humorous) warning: “Objects in mirror are closer than they appear.” Is the mirror flat, convex, or concave?

A penguin waddles along the central axis of a concave mirror, from the focal point to an effectively infinite distance.(a) How does its image move?(b) Does the height of its image increase continuously, decrease continuously, or change in some more complicated manner?

a man 1.30 m tall stands 5.20 m from a concave mirror. if the image could be formed on a screen 15, what is the size of the images?