# Optics

### Description

This quiz tests your knowledge on optics. This is essential for anyone studying physics
Quiz by leonie.examtime, updated more than 1 year ago
 Created by leonie.examtime almost 10 years ago
312
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## Resource summary

### Question 1

Question
When an image is created using a concave lens, What type of image is created?
• Virtual
• Real
• No image is created

### Question 2

Question
When an image is created using a convex lens, what type of image is created?
• A virtual image
• A real image
• The image can be real or virtual

### Question 3

Question
Light waves travel in straight lines
• True
• False

### Question 4

Question
The refractive number index of a medium is unitless
• True
• False

### Question 5

Question
When light rays go through a convex lens, what happens to them?
• Nothing happens them
• The diverge away from the normal
• They converge towards the normal

### Question 6

Question
What is the power of a convex lens?
• Positive
• Negative
• It has no power

### Question 7

Question
If a ray hits a medium at the medium's critical angle, the ray passes through the medium without being deflected
• True
• False

### Question 8

Question
What units do we measure the power of lenses in?
• Watt
• Coulomb
• Dipoles

### Question 9

Question
If a ray of light travels from one medium into a denser medium (one with a higher refractive index), at what speed does the ray travel in the new medium?
• At a faster speed
• At a slower speed
• At the same speed

### Question 10

Question
What is the power of a concave lens?
• Positive
• Negative
• It has no power

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