Chapter 27, Problem 52A

a.

To determine

To Describe: A method to measure energy of a photon.

Explanation of Solution

Introduction:

Light is composed of small packets of energy. Each packet is called a photon.

As per Planck-Einstein’s relation:

  $E=hv$

Here, E is the energy of the photon, h is the Planck’s constant and v represents the frequency of the photon.

The energy of a photon can be measured using this relation.

b.

To determine

To Describe: A method to measure momentum of a photon.

Explanation of Solution

Introduction:

Light is composed of small packets of energy. Each packet is called a photon.

The momentum of a photon can be measured using the following relation:

  $p=\frac{E}{c}$

Here, E is the energy which can be measured using Planck-Einstein relation and c is the speed of light.

c.

To determine

To Describe: The method to measure wavelength of photon.

Explanation of Solution

Introduction:

Light is composed of small packets of energy. Each packet is called a photon.

With the knowledge of momentum, the wavelength of the photon can be measured using the de Broglie’s equation:

  $\lambda =\frac{h}{p}$

Where, h is the Planck’s constant.

Conclusion: