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Exam 23: Mirrors and Lenses

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Question 1

Multiple Choice

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An object of length 3.00 cm is inside a plastic block with index of refraction 1.40.If the object is viewed through the top surface of the block at a non-zero angle from the normal,where is the object relative to its image?

A) in the same direction as its image
B) above the direction of its image
C) below the direction of its image
D) More information is needed.

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C

Question 2

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The lateral magnification for a flat mirror

A) is a function of the object distance.
B) is a function of the image distance.
C) is a function of the object and image distance.
D) is 1.

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Question 3

Multiple Choice

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When the reflection of an object is seen in a concave mirror the image will

An object placed 19.0 cm from a concave mirror produces a real image 12.7 cm from the mirror.If the object is now moved to a new position 27.0 cm from the mirror,where is the new image located as measured from the mirror?

An object is 20.0 cm from the surface of a spherical Christmas tree ornament that is 8.00 cm in diameter.What is the magnification of the image?

An object is placed at a distance of 20.4 cm from a thin convex lens along its axis.The lens has a focal length of 13.0 cm.What are the values,respectively,of the image distance and magnification?

A container is filled with fluid 1 and the apparent depth of the fluid is 5 cm.The container is next filled with fluid 2,and the apparent depth of this fluid is 2 cm.What is the ratio of the indices of refraction of these fluids?

Ron fills a beaker with glycerin (n = 1.473) to a depth of 4.0 cm.If he looks straight down through the glycerin surface,he will perceive the liquid to be what apparent depth?

Which of the following best describes the image of a concave mirror when the object is at a distance greater than twice the focal point distance from the mirror?

When the midpoint of the face of the Sun appears to be on the horizon,where is the actual midpoint from the point of view of the observer?

When an image is inverted compared to the object,it is also

An image is formed using a convex lens,the image being 15 cm past the lens.A second lens is placed 25 cm past the first lens and another image is formed,this time 10 cm past the second lens.Which of the following statements is always true?

A girl is standing in front of a concave mirror.Consider two rays of light,one from her nose and one from her mouth that are parallel as they are traveling toward the mirror.These rays will come together

An object is placed 10 cm in front of a mirror,and an image is formed that has a magnification of 2.Which of the following statements is false?

A converging lens with two convex surfaces has a front surface with radius of curvature of 13.1 cm;the back surface has radius of curvature of 16.5 cm,and it is made from material with an index of refraction of 2.10.What is the focal length of the lens?

If atmospheric refraction did not occur,how would the apparent time of sunrise and sunset be changed?

An object is held at a distance of 19.0 cm from a convex mirror creating an image that is 1/6 the object size.What is the focal length of the mirror?

How large should a wall-mounted mirror be to view the upper half of one's height,h?

Which of the following best describes the image from a plane mirror?

What is the image distance of an object 1.85 m in front of a converging lens of focal length 26.3 cm?