Refraction of light

X is a surface that cannot produce clear images. What is X?

• Rough surface

• Ideal surface

• Smooth surface

• Smooth but curved surface

With what is glass coated in order to convert it into a mirror?

• Copper

• Aluminium

• Silver

• Platinum

What makes objects visible?

• The total internal reflection taking place in an object

• The refracted light from the object

• The absorption of light by objects

• The reflected light from the object

Tags

NGSS.MS-PS4-2

What is the perpendicular drawn at any point on a mirror called?

• A) Incident ray

• B) Reflected ray

• C) Normal

• D) Image

How many images are obtained when plane mirrors are arranged parallel to each other?

• A) A single image

• B) Two images

• C) Infinite number of images

• D) Zero image

In our houses, which of the following is used for looking at ourselves?

• A) Convex mirror

• B) Concave mirror

• C) Convex lens

• D) Plane mirror

What happens in lateral inversion?

• A) The right side of the object will be on the right side of the image.

• B) The left side of the object will be on the left side of the image.

• C) The top of the object will be the bottom of the object.

• D) The right side of the object will be on the left side of the image.

Tags

NGSS.MS-PS4-2

In a periscope, how are the reflecting mirrors arranged?

• A) Perpendicular to each other

• B) Parallel to each other

• C) At an angle of 90 degree

• D) At an angle of 60 degree

Tags

NGSS.MS-PS4-2

What is the nature of image formed on the retina of human eye of an object?

• A) Virtual and erect

• B) Virtual and inverted

• C) Real and erect

• D) Real and inverted

Identify the value of persistence of vision.

• A) 1/1 0th of a second

• B) 1/12th of a second

• C) 1/16th of a second

• D) 1/20th of a second