Exam 22: Electromagnetic Waves

Light travels from crown glass, with a refractive index of $1.52$ , into water, having a refractive index of $1.33$ ? The critical angle for this interface is closest to which one of the following angles?

A stature that is $3.0 \mathrm {~cm}$ tall statue is $24 \mathrm {~cm}$ in front of a concave mirror. The magnitude of the radius of curvature of the mirror is $20 \mathrm {~cm}$ . (a) Is the image real or virtual? (b) How far is the image from the mirror? (c) Is the image upright or inverted? (d) How tall is the image?

A double convex lens has faces with radii of magnitudes 18.0 cm and 20.0 cm. When an object is placed 24.0 cm in front of the lens, a real image is formed 32.0 cm from the lens. (a) What is the focal length of this lens? (b) What is the index of refraction of the material from which the lens is made?

An object is placed to the left of a spherical mirror in front of the mirror. If the image of the object is formed on the right side of the mirror, which of the following statements must be true? (There Could be more than one correct choice.)

A toy is 14 cm in front of a convex spherical mirror. If the image of the toy is 5.8 cm behind the mirror, what is the focal length of the mirror?

A lighted candle is placed a short distance from a plane mirror, as shown in the figure. At which location will the image of the flame appear to be located?

A ray of light traveling in air makes a $63.0 ^ { \circ }$ angle with respect to the normal of the surface of a liquid. It travels in the liquid at a $39.2 ^ { \circ }$ angle with respect to the normal. Find the critical angle for total internal reflection for this interface.

A convex lens has focal length $f$ . If an object is located at "infinity" (very far away), the image formed is located at a distance from the lens

The speed of light in a material is $0.41 \mathrm { c }$ . What is the critical angle of a light ray at the interface between the material and a vacuum?

A double-convex thin lens has radii of curvature of magnitude 46 cm, and it is made of glass of index of refraction 1.60. What is the focal length of this lens?

A beam of light traveling in air strikes a glass slab at an angle of incidence less than 90°. After entering the glass slab, what does the beam of light do? (There could be more than one correct Choice.)

The index of refraction of a type of glass is 1.50, and the index of refraction of water is 1.33. If light enters water from this glass, the angle of refraction will be

A convex lens has focal length $f$ . If an object is placed at a distance of $2 f$ from the lens on the principal axis, the image is located at a distance from the lens

If a spherical concave mirror has a radius of curvature R, its focal length is

An object is placed in front of a thin lens. Which statements are correct in describing the image formed by the lens? (There could be more than one correct choice.)

A lab specimen is 15.2 mm from a converging lens. The image is 4.0 mm tall and 9.0 cm from the lens. How tall is the specimen?

A beam of light that is parallel to the principal axis strikes a concave mirror. What happens to the reflected beam of light?

Light in a transparent material that has an index of refraction of 1.333 strikes the boundary with another transparent material for which the index of refraction is 1.010. What is the critical angle for total internal reflection between these two materials?

Which of following statements about the image formed by a single converging lens are true? (There could be more than one correct choice.)

An object 2.0 cm tall is placed 24 cm in front of a convex mirror having a focal length of magnitude 30 cm. (a) Where is the image formed and how far is it from the mirror? (b) How tall is the image?