Chapter 26: Reflection, Refraction and Geometrical Optics
Practice Questions


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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.



2.  

In the above, which is the correct exit ray?



3.  

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



4.  

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



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.



6.  

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



7.  

An object is 6 cm in front of a concave mirror with a focal length of 4 cm, its image is at



8.  

The radius of curvature of the mirror in question 7 is



9.  

The magnification of the object in question 7 is



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



11.  

If the object in question 10 was 3.5 cm tall, its image would be



12.  

The image in question 10 would be



13.  

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



14.  

The image created in question 13 would be



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?



16.  

A light ray traveling in air strikes glass at an angle of 30 o to the perpendicular, what is the angle of the refracted light?



17.  

A light ray travelling in water strikes glass at an angle to the perpendicular of 30o what is the angle of refraction?



18.  

Light traveling in glass strikes a water interface at an angle of 30o to the perpendicular what is the angle of refraction?



19.  


A light ray traveling horizontally left to right in glass strikes a glass-air interface inclined at an angle. What angle would be necessary for total internal reflection to occur?



20.  

What would be the answer to the previous question if the surrounding material was water and not air?



21.  

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 the focal points.



22.  

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 the focal points.



23.  

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 the focal points.



24.  

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



25.  

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



26.  

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



27.  

An object is placed 8 cm in front of a converging lens with a focal length of 2 cm, its image is at



28.  

The magnifiction in the previous question is



29.  

The image in question 22 is



30.  

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



31.  

The image in the preceeding question is

Note: answer choices in this exercise are randomized.


Practice Questions: Practice Questions by Carl Adler, East Carolina University. ©2002 by Prentice Hall, Inc.

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