Question 1

Which law states that the angle of incidence is equal to the angle of reflection for all wavelengths and materials?

Accepted Answer

Law of Reflection

Question 2

A light ray passes from air (n=1.00) into water (n=1.33) at an angle of incidence of $$30^\circ. $$What is the angle of refraction in the water? (Use Snell's Law: $$n_1$$ \sin \$$theta_1$$ = $$n_2$$ \sin \$$theta_2)$$

Accepted Answer

$$22.1^\circ$$

Question 3

Which of the following best describes total internal reflection?

Accepted Answer

Reflection when the incident angle exceeds the critical angle in a denser medium

Question 4

What is the physical meaning of the term 'wavelength' in the context of light?

Accepted Answer

The distance between two consecutive peaks of a wave

Question 5

A filter that only transmits light linearly polarized in one direction is called:

Accepted Answer

A polarizing filter

Question 6

Which of the following best describes the process of absorption in the context of light?

Accepted Answer

The process by which light is absorbed and then re-emitted in many directions

Question 7

Which of the following is true about the atomic number ($$Z) of an $$element?

Accepted Answer

It is the number of protons in the nucleus

Question 8

A radioactive isotope has a half-life of 10 years. If you start with 80 grams, how much remains after 30 years?

Accepted Answer

10 grams

Question 9

Which of the following best describes nuclear magnetic resonance (NMR)?

Accepted Answer

A technique that detects energy changes when nuclei flip in a magnetic field

Question 10

Which of the following statements about binding energy is correct?

Accepted Answer

It is the energy released when a nucleus is formed from protons and neutrons

Question 11

A beam of unpolarized light passes through two ideal polarizing filters oriented at $$90^\circ to $$each other. What is the intensity of the transmitted light?

Accepted Answer

Zero

Question 12

Which of the following best describes the ground state of a nucleus?

Accepted Answer

The lowest energy state of a nucleus

Question 13

Which of the following is an example of coherent light?

Accepted Answer

Laser light

Question 14

Which process describes the emission of an electron from a nucleus during radioactive decay?

Accepted Answer

Beta decay

Question 15

What is the main difference between specular and diffuse reflection?

Accepted Answer

Specular reflection occurs on smooth surfaces, diffuse on rough

Question 16

Which of the following best describes the process of fluorescence?

Accepted Answer

The process by which light is absorbed and then re-emitted at a longer wavelength

Question 17

Which of the following is the correct definition of the mass number ($$A$$)?

Accepted Answer

The total number of protons and neutrons in the nucleus

Question 18

Which of the following best describes the photoelectric effect?

Accepted Answer

The emission of electrons from a metal surface when light shines on it

Question 19

Which of the following is true about the half-life of a radioactive isotope?

Accepted Answer

It is the time required for half of the isotope to decay

Question 20

Which of the following best describes the process of Compton scattering?

Accepted Answer

The scattering of a photon by an electron, resulting in a change in the photon's wavelength

Chapter 33 & 43 Terminology: Light, Optics, and Nuclear Physics

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