IB SL Physics Revision - 2. Mechanics and 4. Waves

A surveyor’s device emits a laser pulse at the speed of an electromagnetic wave through a vacuum.

What is the time taken for the pulse to travel from the device to a wall 150 m away, where it is reflected, and then return to the device?

• 0.05ns

• 0.10ns

• 0.50μs

• 1.0μs

Tags

NGSS.HS-PS4-1

The period of an electromagnetic wave is 1.0ns. What are the frequency and wavelength of the wave? 

• A
• B
• C
• D

Tags

NGSS.HS-PS4-1

The four graphs represent a progressive wave on a stretched string.
Graphs A and B show how the displacement d varies with distance x along the string at one instant. Graphs C and D show how the displacement d varies with time t at a particular value of x.
The labels on the graphs are intended to show the wavelength λ, the period T and the amplitude a of the wave, but only one graph is correctly labelled. Which graph is correctly labelled? 

• A
• B
• C
• D

Tags

NGSS.HS-PS4-1

Which statement about different types of electromagnetic wave is correct? 

• The frequency of infra-red waves is less than the frequency of blue light. 
• The frequency of radio waves is greater than the frequency of gamma rays.
• The wavelength of red light is less than the wavelength of ultraviolet waves.
• The wavelength of X-rays is greater than the wavelength of microwaves.

Tags

NGSS.HS-PS4-1

Electromagnetic waves of wavelength λ and frequency f travel at speed c in a vacuum. What describes the wavelength and speed of electromagnetic waves of frequency f / 2? 

• A
• B
• C
• D

Tags

NGSS.HS-PS4-1

A wave pulse is travelling to the right along a string. Which of the following best represents the direction of the velocity of the point P? 

• →
• ←
• ↑
• ↓

Tags

NGSS.HS-PS4-1

An amusement park ride has a frequency of 0.064 Hz. What is the ride’s period?

• 0.064 sec
• 6.4 sec
• 2pi / 0.064
• 15.625 sec

Tags

NGSS.HS-PS4-1

The wave's amplitude can be determined by measuring the distance between point ______ and point ______.

• A & B
• A & E
• C & E
• B & D

Which type of light has the smallest frequency of this group?

• red
• yellow
• green
• blue

Tags

NGSS.HS-PS4-1

NGSS.HS-PS4-4

If two overlapping waves are in-phase, the resultant wave will have ______ compared to the two waves.

• Greater amplitude
• Greater frequency
• Greater wavelength
• Greater wave speed

Tags

NGSS.MS-PS4-1