Geometric Optics - Multiple Choice

When an object is placed in front of a plane mirror the image is _____

• Upright, magnified and real

• Upright, the same size and virtual

• Inverted, demagnified and real

• Inverted, magnified and virtual

A point object is placed in front of a plane mirror. Which is the correct location of the image produced by the mirror?

• A

• B

• C

• D

A narrow beam of light is incident on the surface of a plane mirror. The initial angle between the incident ray and reflected ray is 2α. If the mirror is turned around point A by the angle Θ what is the change of the angle between two rays?

• Θ

• 2Θ

• 4Θ

• Θ/2

On a sunny morning, two penguins standing on the seaside observe the full reflection of the Sun. For the baby penguin the reflection image of the Sun is located at a distance x from the shore. Where will the reflection be seen for the mother penguin?

• Closer to the shore

• Further from the shore

• At the same distance

• We need to know the height of each penguin.

A boy running toward a plane mirror with a speed of 1 m/s. At what speed does he approach his image?

• 1 m/s

• 2 m/s

• 4 m/s

• 0.5 m/s

Sun rays are falling on Earth at an angle of 40° with respect to the horizontal. At what angle θ above the horizontal, a plane mirror must be placed in order to make the sun rays fall straight down to light the well?

• 40°

• 50°

• 65°

• 70°

A small light bulb is placed in front of a mirror that is made of two plane perpendicular surfaces. How many images will be formed by this mirror?

• 2

• 3

• 4

• 6

A candle is placed in front of a concave mirror. The image produced by the mirror is _____

• Real, inverted and magnified

• Real, inverted and demagnified

• Virtual, upright and magnified

• Virtual, upright and demagnified

A candle is placed in front of a concave mirror. The image produced by the mirror is _____

• Real, inverted and magnified

• Real, inverted and demagnified

• Virtual, upright and magnified

• Virtual, upright and demagnified

A candle is placed in front of a concave mirror. The image produced by the mirror is _____

• Real, inverted and magnified

• Real, inverted and demagnified

• Virtual, upright and magnified

• Virtual, upright and demagnified