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1 Nature of the light

Total questions: 10

Worksheet time: 8mins

Name
Class
Date
1.

Who supported the extramission theory of vision?

a)

Euclid

b)

Mo-Zi

c)

Huygens

d)

Newton

2.

What is the theory that suggests eyes emit rays or streams of light to perceive objects?

a)

Particle theory of light

b)

Extramission theory

c)

Intromission theory

d)

Wave theory of light

3.

Who proposed the particle theory of light to explain the characteristics of light?

a)

Louis de Broglie

b)

Isaac Newton

c)

Thomas Young

d)

Christian Huygens

4.

What is the relationship between the angle of incidence and the angle of reflection according to the Laws of Reflection?

a)

angle of incidence = angle of reflection

b)

angle of incidence = 90 degrees

c)

angle of incidence < angle of reflection

d)

angle of incidence > angle of reflection

5.

Who discovered the Laws of Refraction?

a)

Thomas Young

b)

Willebrord Snell

c)

Christian Huygens

d)

Isaac Newton

6.

What is the relationship between the refractive indices of two media and the angles of incidence and refraction according to Snell's Law?

a)

n1 = n2

b)

n1tanθi = n2tanθt

c)

n1cosθi = n2cosθt

d)

n1sinθi = n2sinθt

7.

Who was awarded the Nobel Prize in Physics for the discovery of the law of the photoelectric effect?

a)

Isaac Newton

b)

Christian Huygens

c)

Albert Einstein

d)

Louis de Broglie

8.

What did Thomas Young successfully demonstrate through his double-slit experiments?

a)

Particle theory of light

b)

Photoelectric effect

c)

Interference of light

d)

Wave-particle duality

9.

What was the theory that dominated optics during the 18th century?

a)

Wave theory of light

b)

Wave-particle duality

c)

Quantum Mechanics

d)

Particle theory of light

10.

The photoelectric effect is

a)

emission of electrons from a material caused by photons

b)

emission of photons from a material caused by electrons

c)

absorption of electrons from a material caused by photons

d)

absorption of photons from a material caused by electrons