Quiz: Light And Reflection (Sph3up)
(196).jpg "Quiz: Light And Reflection (Sph3up) - Quiz")
Sample quiz for optics unit
- 1.Calculate the index of refraction for an object in which light travels at 1.97 x 108 m/s.
- A.
1.52 x 108 m/s
- B.
0.66 m/s
- C.
1.52 m/s
- D.
1.95
- E.
1.52
- 2.A light ray has an angle of incidence of 34º. The reflected ray will make what angle with the reflecting surface?
- A.
0º
- B.
34º
- C.
56º
- D.
66º
- E.
74º
- 3.A YAG laser has a frequency of 2.8 ´ 1014 Hz. What is the wavelength of the light it produces?
- A.
1.2 x 10–23 m
- B.
1.1 x 10–6 m
- C.
1.2 x 10–2 m
- D.
9.4 x 105 m
- E.
8.5 x 10–22 m
- 4.An student is located 1.8 m from a plane mirror. How far is the image from the student?
- A.
0 m
- B.
0.9 m
- C.
1.8 m
- D.
2.7 m
- E.
3.6 m
- 5.The image in a plane mirror is
- A.
Upright and virtual
- B.
Laterally inverted and virtual
- C.
Inverted and virtual
- D.
Two of A, B, and C
- E.
All of A, B, and C
- 6.An object is placed between F and C of a concave mirror. The image will be located:
- A.
Beyond C
- B.
Between F and C
- C.
Between F and the vertex
- D.
Behind the mirror
- E.
Not enough information provided
- 7.An object is located at the focal point for a convex mirror. The image produced will be
- A.
Inverted and real
- B.
Upright and real
- C.
Inverted and virtual
- D.
Upright and virtual
- E.
No image will be produced
- 8.Objects placed between F and the vertex of a concave mirror will produce images that are:
- A.
Larger than the object
- B.
Virtual
- C.
Upright
- D.
Two of A, B and C
- E.
All of A, B and C
- 9.Sometimes rays of light approaching curved mirrors do not all meet at the focal point. This is due to a phenomenon known as:
- A.
Refraction
- B.
Chromatic abberation
- C.
Spherical abberation
- D.
Dispersion
- E.
Diffraction
- 10.To properly use a shaving mirror (vanity mirror) your face must be located:
- A.
On the focal point
- B.
Between the focal point and the mirror
- C.
On the centre of curvature
- D.
Beyond the centre of curvature
- E.
Between the centre of curvature and the focal point
- 11.When driving at night, headlights of cars viewed in the rearview mirror can be a distraction for the driver. This helps reduce the amount of light entering your eyes because
- A.
Only a small percentage of light is reflected off the glass surface
- B.
Only a small percentage of light is reflected off the silvered surface
- C.
The light reflecting off the glass is sent away from the driver's eyes
- D.
The light entering the eyes are of a different colour
- E.
Light entering the glass is absorbed by the glass to make it dimmer
- 12.A convex mirror of focal length 10 cm is used to create an image of a duck one-third its original height. The duck must be located:
- A.
5 cm from the mirror
- B.
10 cm from the mirror
- C.
15 cm from the mirror
- D.
20 cm from the mirror
- E.
30 cm from the mirror
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