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Home  arrow Chapter 23  arrow Practice Questions

Practice Questions



This activity contains 30 questions.

Question 1.

In the above figure a (blue) light ray from the top of an object is striking a concave mirror, which reflected (red) ray results? The focal point is the orange dot on the left.


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Question 2.

In the above, which is the correct exit ray?


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Question 3.

In the above which is the correct exit ray? The green square on the left is the focal point.


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Question 4.

In the above which is the correct exit ray? The green square on the left is the focal point.


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Question 5.

In the above a light ray is incident on a convex mirror. Which is the correct exit ray? The green squares are the focal point.


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Question 6.

In the above a light ray is incident on a convex mirror. Which is the correct exit ray? The green square on the right is the focal point.


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Question 7.
If an object is 6 cm in front of a concave mirror with a focal length of 4 cm, its image is at


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Question 8.
The radius of curvature of the mirror in Question 7 is


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Question 9.
The magnification of the object in Question 7 is


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Question 10.
If the mirror in Question 7 had a focal length of 6 cm and the object was at 4 cm the image would be at


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Question 11.
If the object in Question 10 was 3.5 cm tall, its image would be


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Question 12.
The image in Question 10 would be


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Question 13.
An object is 4 cm in front of a convex mirror which has a focal length of 6 cm. Its image is at


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Question 14.
The image created in Question 13 would be


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Question 15.

The above figure shows a light ray being (totally) internally reflected by the slanted surface of a prism. What is the minimum value for the index of refraction of the prism for this to occur as shown?


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Question 16.

In the above a light ray is incident on a thin converging lens (thick vertical blue bar). Which is the correct exit ray? The green squares are the focal points.


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Question 17.

In the above a light ray is incident on a thin converging lens (thick vertical blue bar). Which is the correct exit ray? The green squares are the focal points.


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Question 18.

In the above a light ray is incident on a thin converging lens (thick vertical blue bar). Which is the correct exit ray? The green squares are the focal points.


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Question 19.

In the above a light ray is incident on a thin converging lens (thick vertical blue bar). Which is the correct exit ray?


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Question 20.

In the above a light ray is incident on a thin diverging lens (thick vertical red bar). Which is the correct exit ray?


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Question 21.

In the above a light ray is incident on a thin diverging lens (thick vertical red bar). Which is the correct exit ray?


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Question 22.
If an object is placed 8 cm in front of a converging lens with a focal length of 2 cm, its image is at


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Question 23.
The magnifiction in the previous question is


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Question 24.
The image in Question 22 is


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Question 25.
An object is 4 cm in front of a converging lens with a focal length of 8 cm, its image is at


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Question 26.
The image in the preceeding question is


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Question 27.
If an object is placed 2 cm in front of a diverging lens with a focal length of 4 cm, its image is at


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Question 28.
The radius of the first surface, R1, and the radius of the second surface, R2 of the lens at the left are


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Question 29.
The lens in the preceding question is


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Question 30.
If the radius of curvature of the first surface is 30 cm and the second surface has a radius of 60 cm, for the lens (n = 1.5) in Question 28, it has a focal length of


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