Moodle MCQ's

Question 1

The focal point for a mirror is 530mm behind the mirror.

Is the mirror concave or convex?

Answer 1

Convex

Question 2

An object is placed in front of a convex lens, between the lens and the first focal point.
The image produced is

Answer 2

Erect and larger than the object

Question 3

A ray of light travelling parallel to the optical axis of a concave mirror is reflected back….

Answer 3

Through the focal point

Question 4

An image formed with a lens, that can be projected onto the screen is called….

Answer 4

Real image

Question 5

A convex mirror will always produce an image that is …

Answer 5

Virtual
Erect
Smaller

Question 6

A perfect blackbody….

Answer 6

Absorbs all incident radiation

Question 7

When you look into a plane mirror, your image is

Answer 7

Virtual and erect

Question 8

What is a blackbody

Answer 8

A blackbody is a hypothetical object,

Used as a standard of perfection against which the radiation characteristics of other objects are compared

Question 9

In the human eye, where does the largest change in refractive index occur

Answer 9

Cornea

Question 10

When looking at an object close to the eye….

Answer 10

The lens is made thicker by the ciliary muscle

The lens is accommodated

Question 11

Convex mirror

Answer 11

• Diverging
• Virtual image
• Image behind mirror
• Positive

Question 12

Concave mirror

Answer 12

• Converging
• Real image
• Image infront of mirror
• Negative