Physics Short Answers

Question 0

What is the visible light spectrum? state the colours

Answer 0

Range of wavelengths of light that can be detected by the human eye.

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Orange
Yellow
Green
Blue
Violet

Question 1

What property of a light wave determines the color of the light

Answer 1

Wavelength

Question 2

Compare red light with blue light.

1) which one has a longer wavelength
2) which one has a higher frequency

Answer 2

1) Red

2) blue

Question 3

What three things can happen when light strikes object

Answer 3

Reflection, absorption, transmission.

Question 4

State the difference between regular reflection and diffuse reflection

Answer 4

regular reflection:1. Reflection from a polished surface is called regular reflection. 2. The rays are parallel.

3. Give glaze to our eyes.
4. Example, plain mirror.

Diffused Reflection:1. Reflection from a rough surface is called diffuse reflection.2. The rays are not parallel. 3. It makes objects visible.
4. Example, wall.

Question 5

State the law of reflection

Answer 5

Scientific law stating that one light reflects off a surface, the angle of incidence always equals the angle of reflection;

Question 6

State the law of reflection

Answer 6

Scientific law stating that one light reflects off a surface, the angle of incidence always equals the angle of reflection;