Questions from College Physics

Q: During the Apollo XI Moon landing, a retro-reflecting panel

During the Apollo XI Moon landing, a retro-reflecting panel was erected on the Moon’s surface. The speed of light can be found by measuring the time it takes a laser beam to travel from Earth, reflect...

Q: Light in medium A undergoes a total internal reflection as it reaches

Light in medium A undergoes a total internal reflection as it reaches the interface with medium B. Which of the following statements must be true (choose all that apply)? (a) nB < nA (b) nB > nA (c) A...

Q: A concave makeup mirror is designed so that a person 25 cm

A concave makeup mirror is designed so that a person 25 cm in front of it sees an upright image magnified by a factor of two. What is the radius of curvature of the mirror?

Q: A 1.80 - m - tall person stands 9.

A 1.80 - m - tall person stands 9.00 m in front of a large, concave spherical mirror having a radius of curvature of 5.00 m. Determine (a) The mirror’s focal length, (b) The image distance, and (c) Th...

Q: A man standing 1.52 m in front of a shaving

A man standing 1.52 m in front of a shaving mirror produces an inverted image 18.0 cm in front of it. How close to the mirror should he stand if he wants to form an upright image of his chin that is t...

Q: When an object is placed 40.0 cm in front of

When an object is placed 40.0 cm in front of a convex spherical mirror, a virtual image forms 15.0 cm behind the mirror. Determine (a) The mirror’s focal length and (b) The magnification.

Q: At an intersection of hospital hallways, a convex spherical mirror is

At an intersection of hospital hallways, a convex spherical mirror is mounted high on a wall to help people avoid collisions. The magnitude of the mirror’s radius of curvature is 0.550 m. (a) Locate t...

Q: The mirror of a solar cooker focuses the Sun’s rays on a

The mirror of a solar cooker focuses the Sun’s rays on a point 25.0 cm in front of the mirror. What is the mirror’s radius?

Q: A spherical mirror is to be used to form an image,

A spherical mirror is to be used to form an image, five times as tall as an object, on a screen positioned 5.0 m from the mirror. (a) Describe the type of mirror required. (b) Where should the object...

Q: Suppose you stand in front of a flat mirror and focus a

Suppose you stand in front of a flat mirror and focus a camera on your image. If the camera is in focus when set for a distance of 3.00 m, how far are you standing from the mirror?