Light and optics

The point where the rays meet is known as....

• Fire
• the focal point
• refraction
• Plane of the lens

Tags

NGSS.HS-PS4-5

If a light ray is shown on a plane mirror with an angle of incidence of 45 degrees, what is the angle of reflection?

• 15
• 30
• 45
• 90

If you're standing 12 meters in front of a plane mirror, how far away is your image from you?

• 6

• 12

• 18

• 24

Tags

NGSS.MS-PS4-2

Why does green grass look green?

• It reflects all colors except green.
• It absorbs all colors except green.
• It only absorbs green.
• The colors mix to make green.

Which type of lens is shown?

• Concave
• Convex
• Reflective
• Refracting

Tags

NGSS.MS-PS4-2

Which color has the shortest wavelength?

• Red

• Orange

• Green

• Violet

Tags

NGSS.HS-PS4-1

A pencil appearing to bend when it is immersed in a glass of water is an example of...

• Reflection
• Rarefaction
• Refraction
• Reconstruction

Tags

NGSS.MS-PS4-2

When light passes from one medium to a denser medium _________.

• it is bent towards the normal.

• it always lies along the normal.

• it is unaffected.

• it is bent away from the normal.

Tags

NGSS.HS-PS4-3

NGSS.HS-PS4-5

In a vacuum radio waves, visible light and gamma rays all have the same ________.

• frequency

• energy

• wavelength

• speed

Tags

NGSS.HS-PS4-1

Which of the following are the characteristics of the image formed in a plane mirror?

• Virtual and upright

• Virtual and inverted

• Real and inverted

• Real and upright