Home Chapter 23 Practice Questions

# Practice Questions

This activity contains 30 questions.

## 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.

 a b c d

## In the above, which is the correct exit ray?

 a b c d

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

 a b c d

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

 a b c d

 a b c

## 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.

 a b c d

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

 4 cm 6 cm 8 cm 12 cm

## The radius of curvature of the mirror in Question 7 is

 4 cm 6 cm 8 cm 12 cm

## The magnification of the object in Question 7 is

 -2 -4 2 4

## 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

 -12 cm -8 cm -4 cm 6 cm

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

 1.75 cm high. 3.5 cm high. 7.0 cm high. 10.5 cm high.

## The image in Question 10 would be

 erect and real. erect and virtual. inverted and real. inverted and virtual.

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

 -2.4 cm -4.6 cm -6 cm -8 cm

## The image created in Question 13 would be

 erect and virtual. erect and real. inverted and real. inverted and virtual.

## 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?

 1.32 1.42 1.52 2

## 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.

 a b c d

## 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.

 a b c d

 a b c

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

 a b c d

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

 a b c d

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

 a b c d

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

 2.67 cm 5.3 cm 8 cm -4 cm

## The magnifiction in the previous question is

 -3 -0.33 3 0.33

## The image in Question 22 is

 real and erect. real and inverted. virtual and erect. virtual and inverted.

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

 4 cm. 8 cm. -4 cm. -8 cm.

## The image in the preceeding question is

 real and erect. real and inverted. virtual and erect. virtual and inverted.

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

 2.67 cm. 1.34 cm. -2.67 cm. -1.33 cm.

## The radius of the first surface, R1, and the radius of the second surface, R2 of the lens at the left are

 both positive. both negative. positive and negative respectively. negative and positive respectively.

## The lens in the preceding question is

 a converging lens. a diverging lens. not enough information.

## 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

 120 cm. 60 cm. 24 cm. 12 cm.