Question 1

​Two mirrors are at right angles to one another. If an object is placed near the mirrors, what is the largest number of images that would be seen in the mirrors?

Accepted Answer

A)  ​3
B)  ​2
C)  ​4
D)  ​5
E)  ​6

Question 2

Two mirrors are at right angles to one another. A light ray is incident on the first at an angle of 30° with respect to the normal to the surface. What is the angle of reflection from the second surface? ​

Accepted Answer

A)  ​30°
B)  ​60°
C)  ​45°
D)  ​53°
E)  ​75°

Question 3

The inhabitants of a planet in another galaxy have their eyes at the exact center of their 4.0-m-long bodies. How long must a plane mirror be for such a creature to be able to see all of its body in the mirror?

Accepted Answer

A)  1.0 m
B)  2.0 m
C)  2.5 m
D)  4.0 m
E)  8.0 m

Question 4

​Two flat rectangular mirrors are set edge to edge and placed perpendicular to a flat nonreflecting surface. A light ray that reflects from mirror 1 at angle θM 1 then strikes the second mirror and reflects at θM 2 such that the angle between the ray reaching mirror 1 and the ray leaving mirror 2 is 180°. The angle between the two mirrors is

Accepted Answer

A)  ​0°.
B)  ​45°.
C)  ​90°.
D)  ​150°.
E)  ​235°.

Question 5

​An object is placed a distance y0 = −2f in front of a concave mirror of focal length f that is located at y = 0. An identical object is placed a distance ​y'0 = −2f in front of a convex mirror of focal length −f that is located at y' = 0. The difference between the two image positions, yi − y'i, is

Accepted Answer

A)  ​f /2.
B)  ​f.
C)  ​4f /3.
D)  ​2f.
E)  ​8​f​ /3.

Exam 37: Reflection and Images Formed by Reflection

Two mirrors are at right angles to one another. If an object is placed near the mirrors, what is the largest number of images that would be seen in the mirrors?

Correct Answer
verified

The inhabitants of a planet in another galaxy have their eyes at the exact center of their 4.0-m-long bodies. How long must a plane mirror be for such a creature to be able to see all of its body in the mirror?

Correct Answer
verified

Correct Answer
verified

Two mirrors are at right angles to one another. A light ray is incident on the first at an angle of 30° with respect to the normal to the surface. What is the angle of reflection from the second surface?

Correct Answer
verified

Correct Answer
verified

Exam 37: Reflection and Images Formed by Reflection

​Two mirrors are at right angles to one another. If an object is placed near the mirrors, what is the largest number of images that would be seen in the mirrors?

Correct AnswerverifiedShow Answer

The inhabitants of a planet in another galaxy have their eyes at the exact center of their 4.0-m-long bodies. How long must a plane mirror be for such a creature to be able to see all of its body in the mirror?

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

Two mirrors are at right angles to one another. A light ray is incident on the first at an angle of 30° with respect to the normal to the surface. What is the angle of reflection from the second surface? ​

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

Two mirrors are at right angles to one another. If an object is placed near the mirrors, what is the largest number of images that would be seen in the mirrors?

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Two mirrors are at right angles to one another. A light ray is incident on the first at an angle of 30° with respect to the normal to the surface. What is the angle of reflection from the second surface?

Correct Answer
verified

Correct Answer
verified