Plane mirror: Jack 2.5 ft away. Distance from Jack to his image?

A
2.5 ft

B
3 ft

C
4.5 ft

D
5 ft

Topic Flashcards

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Question

What are the three main characteristics of an image formed by a plane mirror (type, orientation, and size)?

Answer

The image is virtual, upright (same orientation as the object), and the same size as the object.

Question

In a plane mirror, what is the relationship between the object's distance from the mirror and the image's apparent distance behind the mirror?

Answer

They are equal. If an object is d units in front, the virtual image appears d units behind the mirror.

Question

Why is the image in a plane mirror described as "laterally inverted"?

Answer

Because it shows a left-right reversal. Your mirror image raises its left hand when you raise your right hand, for example.

Question

If you walk toward a plane mirror at a speed of 1 m/s, how fast does your image appear to approach you?

Answer

2 m/s. You move toward the mirror at 1 m/s, and your image also moves toward the mirror (from behind it) at 1 m/s. The relative speed between you and your image is therefore 2 m/s.

Question

What is the minimum height a vertical plane mirror must be for a person to see their full-length image from head to toe, and where must the top of this mirror be placed? (Assume the person's height is H and their eye level is at a height h from the ground).

Answer

The minimum height is H/2. The top of the mirror must be placed halfway between the person's eye level and the top of their head, and the bottom must be placed halfway between their eye level and their feet.

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Can you project the image from a plane mirror onto a screen?

Plane mirror: Jack 2.5 ft away. Distance from Jack to his image?

A
2.5 ft

B
3 ft

C
4.5 ft

D
5 ft

The distance from Jack to his image is 5 feet.

Topic Flashcards

Mini Quiz

Related Questions

Plane mirror: Jack 2.5 ft away. Distance from Jack to his image?

A 2.5 ft B 3 ft C 4.5 ft D 5 ft

The distance from Jack to his image is 5 feet.

Topic Flashcards

Mini Quiz

Related Questions

A
2.5 ft

B
3 ft

C
4.5 ft

D
5 ft