Questions from College Physics

Q: A contact lens is made of plastic with an index of refraction

A contact lens is made of plastic with an index of refraction of 1.50. The lens has an outer radius of curvature of +2.00 cm and an inner radius of curvature of +2.50 cm. What is the focal length of t...

Q: A person walks into a room that has, on opposite walls

A person walks into a room that has, on opposite walls, two plane mirrors producing multiple images. Find the distances from the person to the first three images seen in the left - hand mirror when th...

Q: A thin plastic lens with index of refraction n = 1.

A thin plastic lens with index of refraction n = 1.67 has radii of curvature given by R1 = 212.0 cm and R2 = 40.0 cm. Determine (a) The focal length of the lens, (b) Whether the lens is converging or...

Q: Try this simple experiment on your own. Take two opaque cups

Try this simple experiment on your own. Take two opaque cups, place a coin at the bottom of each cup near the edge, and fill one cup with water. Next, view the cups at some angle from the side so that...

Q: A converging lens has a focal length of 10.0 cm

A converging lens has a focal length of 10.0 cm. Locate the images for object distances of (a) 20.0 cm, (b) 10.0 cm, and (c) 5.00 cm, if they exist. For each case, state whether the image is real or v...

Q: An object is placed 20.0 cm from a concave spherical

An object is placed 20.0 cm from a concave spherical mirror having a focal length of magnitude 40.0 cm. (a) Use graph paper to construct an accurate ray diagram for this situation. (b) From your ray d...

Q: A diverging lens has a focal length of magnitude 20.0

A diverging lens has a focal length of magnitude 20.0 cm. (a) Locate the images for object distances of (i) 40.0 cm, (ii) 20.0 cm, and (iii) 10.0 cm. For each case, state whether the image is (b) Real...

Q: A diverging lens has a focal length of 20.0 cm

A diverging lens has a focal length of 20.0 cm. Use graph paper to construct accurate ray diagrams for object distances of (a) 40.0 cm and (b) 10.0 cm. In each case, determine the location of the imag...

Q: A transparent photographic slide is placed in front of a converging lens

A transparent photographic slide is placed in front of a converging lens with a focal length of 2.44 cm. An image of the slide is formed 12.9 cm from the slide. How far is the lens from the slide if t...

Q: The nickel’s image in Figure P23.36 has twice the diameter

The nickel’s image in Figure P23.36 has twice the diameter of the nickel when the lens is 2.84 cm from the nickel. Determine the focal length of the lens. Figure P23.36: