Refraction-1(ASP)

The speeds of light in vacuum and air, respectively, are _______ m/s

• 3x10⁸ and 3x10⁸

• 3x10⁸ and 3x10¹²

• 3x10⁸ and 3x10⁶

• 3x10⁸ and 3x10¹⁰

We can see objects because of_______

• reflection
• refraction
• transmission
• diffraction

Tags

NGSS.MS-PS4-2

How does light behave as it enters these mediums?

• continue its path as straight line.
• bends toward the normal
• bends away from the normal
• reflects

A ray of light enters a glass block at an angle of incidence i producing an angle of refraction r in the glass.

Several different values of i and r are measured, and a graph is drawn of sin i against sin r. Which of the graphs below is correct?

• A

• B

• C

• D

According to the Law of reflection, a light ray striking a mirror

• continues moving through the mirror in the same direction
• moves into the mirror at a slightly different angle
• bounces off the mirror toward the direction it came from
• bounces off the mirror at the same angle it hits.

Tags

NGSS.MS-PS4-2

A ray of light traveling from air into crown glass strikes the surface at an angle of 30 degrees. What is the angle of refraction? (air n=1, crown glass n=1.532)

• 39.7 degrees
• 19.2 degrees
• 59.1 degrees
• 12.3 degrees

The figure below shows a ray of light entering and passing along an optical fiber.

Find the refractive index and speed of light in glass.

• n = 2.4 and v = 2.5 x 10⁸ m/s

• n = 1.5 and v = 2.0 x 10⁸ m/s

• n = 1.5 and v = 2.8 x 10⁸ m/s

• n = 2.4 and v = 2.0 x 10⁸ m/s

Light has the lowest velocity in which medium?
flint glass n=1.70
barium glass n=1.60
crown glass n=1.523
water n=1.33
diamond n=2.45

• diamond
• water
• flint glass
• barium glass

Tags

NGSS.HS-PS4-1

The figure below shows a ray of blue light passing from air into a glass block and refracting at the surface.

As the light enters the glass, state what happens to speed, frequency and wavelength:

• speed decreases, frequency remains constant and wavelength decreases

• speed increases, frequency increases and wavelength decreases

• speed increases, frequency remains constant and wavelength decreases

• speed increases, frequency decreases and wavelength decreases

Which of the following is/are the condition(s) for total internal reflection to take place?

• Only I

• Only II

• I and II only

• II and III only