What is Nearsightedness?

condition that has difficulty seeing things that are far away

condition that has difficulty seeing things that are close

A converging (concave) mirror with a focal length of 27 cm is held 14 cm from your face. Determine the location and magnification of the image.

29.07 cm behind the mirror, magnification of 2.08

29.07 cm in front of the mirror, magnification of -2.08

19.7 cm behind the mirror, magnification of 3.08

19.7 cm in front of the mirror, magnification of -3.08

No image is formed when the object is placed at a distance .................. from the concave mirror.

less than radius of curvature but more than focal length

An index of refraction less than one for a medium would imply

that the speed of light in the medium is greater than the speed of light in vacuum.

that the speed of light in the medium is the same as the speed of light in vacuum.

What is an Astigmatism?

persons vision is distorted due to a irregular shaped eye

a very contagious condition caused by a bacterial infection

a substance that hardens your teeth

a hard substance that gives nails their strength

A negative magnification for a mirror means

the image is inverted, and the mirror is concave.

the image is inverted, and the mirror is convex.

the image is inverted, and the mirror may be concave or convex.

the image is upright, and the mirror is convex.

A student placed a pencil in a cup of water. The pencil appears broken because light-

bends when it passes through water

always travels in a straight line

makes the water in the glass evaporate

reflects the pencil on the water's surface

How does a concave lens differ from a convex lens?

A convex lens has a thick center and thin edges, a concave lens has a thin center and thicker edges

A convex lens is another way to describe a plane mirror; a concave lens is curved

A concave lens is curved inward on both sides; a convex lens is on only one side

A convex lens has a thin center and thick edges. a concave lens has a thick center and thinner edges

Blue light waves have a shorter wavelength, causing them to hit more molecules in our atmosphere and scatter blue light

Light is reflected off of the ocean, causing the sky to appear blue

The nitrogen and oxygen molecules in our atmosphere have a blue tint

Clouds and rain droplets cause the sky to look blue

The ocean is blue because it is reflecting

all colors of light except blue

spherical mirrors and lens

Authored by Dimple Kaur

Physics

10th Grade

NGSS covered

Used 21+ times

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40 questions

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MULTIPLE CHOICE QUESTION

45 sec • 1 pt

What is the value of the unknown angle (theta) in the following diagram?

A. 30 degrees

B. 45 degrees

C. 90 degrees

D. 60 degrees

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

An image that you can see , but does not really exist is called which of the following?

Real Image

Fake Image

Virtual Image

Digital Image

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

What is the position of the image when an object is placed between the centre of curvature and the focus of a concave mirror?

At the focus

At the centre of curvature

Beyond the centre of curvature

Between the focus and the centre of curvature

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

A real image having a size of 10 cm is formed by a concave mirror. The size of the object is 5 cm.The magnification of the object is

-5

-2

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

What type of image is produced by a flat mirror?

Real and upright

Real and inverted

Virtual and upright

Virtual and inverted

A dentist uses a small dental mirror to help magnify teeth in your mouth. What type of mirror is this?

a convex mirror

a concave mirror

a convex lens

a concave lens

The side view mirrors on your car help shrink the image on both sides of the car, allowing you to see a larger field of view. What type of mirror is this?

a convex mirror

a concave mirror

a convex lens

a concave lens

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spherical mirrors and lens

What is the value of the unknown angle (theta) in the following diagram?

An image that you can see , but does not really exist is called which of the following?

What is the position of the image when an object is placed between the centre of curvature and the focus of a concave mirror?

A real image having a size of 10 cm is formed by a concave mirror. The size of the object is 5 cm.The magnification of the object is

What type of image is produced by a flat mirror?

A dentist uses a small dental mirror to help magnify teeth in your mouth. What type of mirror is this?

The side view mirrors on your car help shrink the image on both sides of the car, allowing you to see a larger field of view. What type of mirror is this?

A student is conducting an experiment with four different types of mirrors. Which mirror in the experiment converges light and UP CLOSE, produces an upright, magnified image of the candles? (hint: no two mirrors are the same)

An object is placed at a distance of 27.0 cm away from a thin convex lens with a focal length of 9.00 cm. How far from the lens is the image located and what type of image is formed?

what is A on the diagram?

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