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WorksheetsRefraction-1(ASP)
Total questions: 12
Worksheet time: 9mins
The speeds of light in vacuum and air, respectively, are _______ m/s
3x108 and 3x108
3x108 and 3x1012
3x108 and 3x106
3x108 and 3x1010
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
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
flint glass n=1.70
barium glass n=1.60
crown glass n=1.523
water n=1.33
diamond n=2.45
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
Which of the wave properties remains constant during refraction?
speed
wavelength
frequency
amplitude
A light ray containing two different wavelengths is incident at a cetain angle on a block of glass. What color can be associated with the refracted rays 𝒓𝟏 and 𝒓𝟐 respectively according to the figure shown below?
r1 = red r2 = blue
r1 = red r2 = yellow
r1 = green r2 = red
r1 = green r2 = violet
