Physics Module 11 Review

Question 1

The speed of sound depends on

Accepted Answer

All of these

Question 2

As frequency increases, wavelength __________________.

Accepted Answer

Decreases

Question 3

According to wave-particle duality, does light exhibit wave or particle characteristics?

Accepted Answer

It exhibits both, just not at the same time.

Question 4

The___ of a sound wave is determined from its amplitude

Accepted Answer

Loudness

Question 5

Classical physics does not explain the photoelectric effect.

Accepted Answer

True

Question 6

The highest-energy, highest-frequency waves

Accepted Answer

Gamma

Question 7

Sound waves are transverse waves

Accepted Answer

False

Question 8

The Photoelectric effect describes the emission of ________ from the cathode.

Accepted Answer

electrons

Question 9

These waves are just below visible light

Accepted Answer

Infrared

Question 10

Sound waves can .....

Accepted Answer

travel in all directions

Question 11

Frequency and wavelength have what type of relationship?

Accepted Answer

inverse

Question 12

Light waves travel in ________lines.

Accepted Answer

straight

Question 13

What value is Planck's constant?

Accepted Answer

6.63 x 10-34 J-sec

Question 14

Sound waves can travel through ....

Accepted Answer

solids, liquids & gases

Question 15

Sound waves are all...

Accepted Answer

Longitudinal waves

Question 16

Different colors of light are waves with different amplitudes.

Accepted Answer

False

Question 17

What it the main factor that affects the speed of a sound wave?

Accepted Answer

properties of the medium

Question 18

All waves have....

Accepted Answer

wavelength, frequency, amplitude & speed

Question 19

Einstein's theory that light behaves as a stream of particles explains the ________ _______ and many other observations.

Accepted Answer

Photoelectric Effect

Question 20

Lower frequency waves just below the visible light spectrum

Accepted Answer

Infrared waves

Question 21

How did Einstein explain the photoelectric effect in his 1905 paper?

Accepted Answer

He applied Planck's theory to electromagnetic waves.

Question 22

Sound waves are all...

Accepted Answer

Longitudinal waves

Question 23

Photoelectric Effect is

Accepted Answer

Emission of electrons from an illuminated metal surface.

Question 24

Low pitch has a long -

Accepted Answer

wavelength

Question 25

What can be concluded about the speed of sound in these materials?

Accepted Answer

Sound travels faster in lead than in air or rubber.

Question 26

What do waves transfer?

Accepted Answer

energy

Question 27

All waves have....

Accepted Answer

wavelength, frequency, amplitude & speed

Question 28

The photoelectric effect was proposed by ___

Accepted Answer

Albert Einstinen

Question 29

The theory of wave -particle duality states that all matter has properties of ---------

Accepted Answer

Both a particle and a wave

Question 30

What is a Pitch?

Accepted Answer

a measure of how high or low a sound is percieved as

Question 31

The electromagnetic radiation must be above a ________ frequency, f0 for photoelectric effect to occur.

Accepted Answer

Threshold

Question 32

In the photoelectric effect shown below the photon energy would be:

Accepted Answer

8 eV

Question 33

Diffraction supports the ____ theory of light and photoelectric effect supports the ____theory

Accepted Answer

wave, particle

Question 34

Photons have no mass.

Accepted Answer

True

Question 35

In physics, speed of light is represented by which of the following?

Accepted Answer

c

Question 36

How do we distinguish between different wavelengths of light waves?

Accepted Answer

Colour

Question 37

What are Electromagnetic Waves?

Accepted Answer

Electric & magnetic fields that travel through space very quickly.

Question 38

The speed of light depends on...?

Accepted Answer

The medium that it is passing through

Question 39

What is amplitude?

Accepted Answer

How high vibrations of a wave are

Question 40

Which of these would increase the kinetic energy of emitted electrons in the photoelectric effect?

Accepted Answer

Higher frequency photons

Question 41

Who studied the speed of light and developed a theory that the laws of physics apply everywhere in space?

Accepted Answer

Einstein

Question 42

The frequency of a wave is

Accepted Answer

The number of cycles per unit time

Question 43

Different colors of light are waves with different wavelenths.

Accepted Answer

True

Question 44

How does light travel?

Accepted Answer

All of the above

Question 45

Light is both wave and particle.

Accepted Answer

True

Question 46

Photons are

Accepted Answer

Packets of energy

Question 47

What causes sound?

Accepted Answer

vibrations

Question 48

What is the photoelectric effect?

Accepted Answer

Light causing the emission of electrons from a metal

Physics Module 11 Review

Questions 48

Physics Module 11 Review

Questions 48