AnswersCPS Online Chemistry fall – 1-2027Dual Nature of Light

Dual Nature of Light Answers

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Which best explains how the diffraction pattern observed in Young’s experiment supports the wave theory of light?

A
The pattern was caused by light moving in a straight path.
B
The pattern was caused by light being separated into colors.
C
The pattern was caused by the interference of waves.
D
The pattern was caused by the reflection of waves.
2
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Heinrich Hertz used properties of which type of wave to support the idea that light is also made of waves?

A
infrared
B
gamma
C
microwave
D
radio
3

What is the energy of a photon with a frequency of 3.6 × 1015 Hz? Planck’s constant is 6.63 × 10–34 J•s.

A
1.8 × 10–49 J
B
2.4 × 10–19 J
C
1.8 × 10–18 J
D
2.4 × 10–18 J
4

What is the smallest packet of electromagnetic energy that can be absorbed or emitted?

A
a proton
B
an electron
C
a quantum
D
a wave
5

Which describes a relationship when calculating the energy of a photon?

A
The energy of the photon is directly proportional to frequency.
B
The energy of the photon is inversely proportional to frequency.
C
As the energy of the photon increases, Planck’s constant increases.
D
As the energy of the photon increases, Planck’s constant decreases.
6

Which phenomena support only the wave theory of light? Select 2 options.

A
reflection
B
refraction
C
diffraction
D
interference
E
photoelectric effect
7

Which observation supports the idea that light is made of particles?

A
Light is produced by the interaction of magnetic and electric fields.
B
Light spreads out after passing through an opening.
C
Light diffracts when it hits a barrier.
D
Light moves in a straight path.
8

How does refraction support the particle theory of light?

A
Particles bounce off surfaces similar to the way in which a ball bounces off a wall.
B
Light slows down and bends when it moves from a less dense to a more dense medium.
C
Forces act on the particles to push or pull them from one medium to another.
D
As light passes through an opening, it spreads out in all directions.
10

Which of the following would most benefit from quantum computing?

A
animating cartoons
B
running a cash register
C
protecting a device from a cyberattack
D
determining the colors found in a rainbow

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