Exam 26: Geometrical Optics

An object is placed between C and F in front of a concave mirror with a focal length of 10 cm. What is the position of its image in relation to the mirror and what are its characteristics?

A slide projector is designed with its lens 6.0 m from the screen. The projected image is 1.5 m square of a slide object 2.5 cm square. (a) What is the object distance from the lens? (b) What should be the lens focal length? (c) What is the lens POWER?

An object is placed 21 cm from a concave lens of focal length 25 cm. What is the magnification?

In a concave mirror the inside of the spherical surface is the reflecting surface.

The focal length of a convex mirror is -20 cm. What is its radius of curvature?

The critical angle for a beam of light passing from water into air is 48.8°. This means that all light rays with an angle of incidence greater than this angle will be

An object is placed 50 cm in front of a concave mirror with a focal length of 25 cm. What is the magnification?

If a lens is submerged in water, what happens to its focal length?

The perpendicular distance from the center of curvature to a spherical mirror is called

The reflecting surfaces of two plane mirrors are perpendicular to each other. How many images of himself will a person standing at a certain distance from the intersection of these mirrors see?

The angle of reflection is the angle between

What should be the angle between the reflecting surfaces of two plane mirrors in order for every incident beam to be parallel to its reflected beam?

A ray of light in air enters a glass surface at right angles to the surface. What is the angle of incidence?

A beam of light in water (n = 1.33) enters a glass slab (n = 1.50) at an angle of incidence of 60.0°. What is the angle of refraction?

A 4.0-cm-tall object is placed 50.0 cm from a diverging lens of focal length 25.0 cm. What is the nature and location of the image?

An object 10.0 cm in height is placed 37.0 cm in front of a concave mirror of focal length 18.5 cm. What is the height of the image?

An object 4.0 cm in height is placed 8.0 cm in front of a concave mirror with a focal length of 10.0 cm. What is the position of its image in relation to the mirror and what are its characteristics?

A ray of light strikes a plane mirror perpendicular to the mirror. What is the angle of incidence?

A beam of white light goes through dispersion in a prism. The color that bends the most is

Lucite has an index of refraction of 1.50. What is its critical angle of incidence?