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- 1. Multiple-choice30 seconds1 pt
Which of these objects is not luminous?
The sun
A star in the sky
The moon
A candle
- 2. Multiple-choice30 seconds1 pt
According to the Law of Reflection...
the angle of incidence is equal to the angle of reflection
the angle of incidence is greater then the angle of reflection
the angle of incidence is smaller than the angle of reflection
the angle of incidence is not equal to the angle of reflection
- 3. Multiple-choice30 seconds1 pt
A ray of light is incident on a plane mirror and the angle of incidence is 25 degrees. What is the angle of reflection?
0 degrees
50 degrees
100 degrees
25 degrees
- 4. Multiple-choice30 seconds1 pt
The bending of a ray of light as it travels from one medium to another is called
reflection
refraction
the total internal reflection
deflection
- 5. Multiple-choice30 seconds1 pt
A ray of light is shone on a rectangular glass block as shown. Identify X, Y and Z.
X = Angle of reflection, Y = Angle of incidence, Z = Normal
X = Angle of Refraction, Y = Angle of incidence, Z = Emergent ray
X = Angle of incidence, Y = Emergent ray, Z = Angle of refraction
X = Angle of incidence, Y = Angle of refraction, Z = Emergent ray
- 6. Multiple-choice30 seconds1 pt
When a ray of light travels from a vacuum to a denser medium such as glass, it is refracted away from the normal.
True
False
- 7. Multiple-choice30 seconds1 pt
The primary colours are
red, white and blue
red, green and yellow
red, blue and yellow
red, green and blue
- 8. Multiple-choice30 seconds1 pt
Which of the following colours has the shortest wavelength?
Orange
Yellow
Green
Red
- 9. Multiple-choice30 seconds1 pt
Which of these parts of the eyes fits this description?
"The outer coating of the eye. It is the opaque protective layer, known as the ‘white of the eye' ".
Fovea
Sclera
Cornea
Retina
- 10. Multiple-choice30 seconds1 pt
Which of these parts of the eyes fits this description?
"A small pit in the retina shaped to allow the light to fall straight onto the nerve cells so that we can see very detailed objects.
Fovea
Sclera
Cornea
Retina
