Copy and complete Table 12.2. (You may assume that the speed of radio waves is 3 . 00 × 10 8 m s - 1 ) Station Wavelength / m Frequency / M H z Radio A (FM) 97 . 6 Radio B (FM) 94 . 6 Radio B (LW) 1515 Radio C (MW) 693

Given, the speed of radio waves is v = 3 . 00 × 10 8 ms - 1 And we know that the relationship of the speed of sound v , its frequency f , And its wavelength λ Is given by v = fλ , or f = v λ , or λ = v f Station Wavelength / m Frequency / MHz Radio A FM = v f = 3 . 0 × 10 8 97 . 6 × 10 6 = 3 . 07 97 . 6 Radio B FM = v f = 3 . 0 × 10 8 94 . 6 × 10 6 = 3 . 17 94 . 6 Radio B LW 1515 = v λ = 3 . 0 × 10 8 1515 Hz = 0 . 198 Radio C MW 693 = v λ = 3 . 0 × 10 8 693 Hz = 0 . 433

Type of electromagnetic waves Wavelength range / m Radio waves > 10 6 to 10 - 1 Microwaves 10 - 1 to 10 - 3 Infrared 10 - 3 to 7 × 10 - 7 Visible 7 × 10 - 7 (red to 4 × 10 - 7 (violet) Ultraviolet 4 × 10 - 7 to 10 - 8 X - rays 10 - 8 to 10 - 13 λ - rays 10 - 10 to 10 - 16 Study Table and answer the questions. (a) Which type of radiation has the narrowest range of wavelengths?

The visible Radiation has the narrowest range of the wavelength.its range of wavelength is 7 × 10 - 7 ( red ) to 4 × 10 - 7 ( violet ) And frequency is 4 . 3 × 10 14 to 7 . 5 × 10 14 . Visible radiation, also referred to as visible light or simply “light,” is a form of electromagnetic radiation characterised by electromagnetic waves with wavelengths.

Type of electromagnetic waves Wavelength range / m Radio waves > 10 6 to 10 - 1 Microwaves 10 - 1 to 10 - 3 Infrared 10 - 3 to 7 × 10 - 7 Visible 7 × 10 - 7 (red to 4 × 10 - 7 (violet) Ultraviolet 4 × 10 - 7 to 10 - 8 X - rays 10 - 8 to 10 - 13 λ - rays 10 - 10 to 10 - 16 Study Table and answer the questions. (b) Which has the second narrowest range?

Ultraviolet has the second narrowest range.Ultraviolet is a form of electromagnetic radiation with wavelength from. 4 × 10 - 7 to 10 - 8 Shorter than that of visible light, And frequency range from 7 . 5 × 10 14 to 3 × 10 16

Type of electromagnetic waves Wavelength range / m Radio waves > 10 6 to 10 - 1 Microwaves 10 - 1 to 10 - 3 Infrared 10 - 3 to 7 × 10 - 7 Visible 7 × 10 - 7 (red to 4 × 10 - 7 (violet) Ultraviolet 4 × 10 - 7 to 10 - 8 X - rays 10 - 8 to 10 - 13 λ - rays 10 - 10 to 10 - 16 Study Table and answer the questions. (c) What is the range of wavelengths of microwaves, in millimetres?

Microwave is a form of electromagnetic radiation with wavelengths ranging from about 1 - 100 mm Corresponding to frequencies between 300 MHz and 300 GHz Respectively. Microwaves are used in radar, in communications, and for heating in microwave ovens and in various industrial processes.

Type of electromagnetic waves Wavelength range / m Radio waves > 10 6 to 10 - 1 Microwaves 10 - 1 to 10 - 3 Infrared 10 - 3 to 7 × 10 - 7 Visible 7 × 10 - 7 (red to 4 × 10 - 7 (violet) Ultraviolet 4 × 10 - 7 to 10 - 8 X - rays 10 - 8 to 10 - 13 λ - rays 10 - 10 to 10 - 16 Study Table and answer the questions. (d) What is the range of wavelengths of visible light, in nanometres?

The visible light spectrum is the segment of the electromagnetic spectrum that the human eye can view. More simply, this range of wavelengths is called visible light. Typically, the human eye can detect wavelengths from 400 to 700 Nanometers.

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AS and A Level

IMPORTANT

Earn 100

An oscillator is used to send a transverse wave along a stretched string. The wavelength of the wave is $5.0 cm$ when the frequency of the oscillator is $30 Hz$ . For this wave, calculate:

(b) Its speed.

Important Questions on Waves

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AS and A Level

IMPORTANT

Physics for Cambridge International AS & A Level Coursebook 3rd Edition Digital Access>Chapter 12 - Waves>Questions>Q 9

Copy and complete Table 12.2. (You may assume that the speed of radio waves is $3.00 \times 10^{8} m s^{- 1}$ )

Station	Wavelength / $m$	Frequency / $M H z$
Radio A (FM)		$97.6$
Radio B (FM)		$94.6$
Radio B (LW)	$1515$
Radio C (MW)	$693$

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AS and A Level

IMPORTANT

Physics for Cambridge International AS & A Level Coursebook 3rd Edition Digital Access>Chapter 12 - Waves>Question>Q 10

A plane's engine emits a note of constant frequency $120 Hz$ . It is flying away from a stationary observer at a speed of $80 m s^{- 1}$ . Calculate:

(a) The observed wavelength of the sound received by the observer

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AS and A Level

IMPORTANT

Physics for Cambridge International AS & A Level Coursebook 3rd Edition Digital Access>Chapter 12 - Waves>Question>Q 10

A plane's engine emits a note of constant frequency $120 Hz$ . It is flying away from a stationary observer at a speed of $80 m s^{- 1}$ . Calculate:

(b) Its observed frequency. (Speed of sound in air $= 330 m s^{- 1}$ .)

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AS and A Level

IMPORTANT

Physics for Cambridge International AS & A Level Coursebook 3rd Edition Digital Access>Chapter 12 - Waves>Questions>Q 11

Question Image

Add a third column showing the range of frequencies of each type of radiation.

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AS and A Level

IMPORTANT

Physics for Cambridge International AS & A Level Coursebook 3rd Edition Digital Access>Chapter 12 - Waves>Questions>Q 12

Type of electromagnetic waves	Wavelength range / $m$
Radio waves	$> 10^{6} to 10^{- 1}$
Microwaves	$10^{- 1} to 10^{- 3}$
Infrared	$10^{- 3} to 7 \times 10^{- 7}$
Visible	$7 \times 10^{- 7}$ (red to $4 \times 10^{- 7}$ (violet)
Ultraviolet	$4 \times 10^{- 7} to 10^{- 8}$
$X$ - rays	$10^{- 8} to 10^{- 13}$
$λ$ - rays	$10^{- 10} to 10^{- 16}$

Study Table and answer the questions.

(a) Which type of radiation has the narrowest range of wavelengths?

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AS and A Level

IMPORTANT

Physics for Cambridge International AS & A Level Coursebook 3rd Edition Digital Access>Chapter 12 - Waves>Questions>Q 12

Type of electromagnetic waves	Wavelength range / $m$
Radio waves	$> 10^{6} to 10^{- 1}$
Microwaves	$10^{- 1} to 10^{- 3}$
Infrared	$10^{- 3} to 7 \times 10^{- 7}$
Visible	$7 \times 10^{- 7}$ (red to $4 \times 10^{- 7}$ (violet)
Ultraviolet	$4 \times 10^{- 7} to 10^{- 8}$
$X$ - rays	$10^{- 8} to 10^{- 13}$
$λ$ - rays	$10^{- 10} to 10^{- 16}$

Study Table and answer the questions.

(b) Which has the second narrowest range?

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AS and A Level

IMPORTANT

Physics for Cambridge International AS & A Level Coursebook 3rd Edition Digital Access>Chapter 12 - Waves>Questions>Q 12

Type of electromagnetic waves	Wavelength range / $m$
Radio waves	$> 10^{6} to 10^{- 1}$
Microwaves	$10^{- 1} to 10^{- 3}$
Infrared	$10^{- 3} to 7 \times 10^{- 7}$
Visible	$7 \times 10^{- 7}$ (red to $4 \times 10^{- 7}$ (violet)
Ultraviolet	$4 \times 10^{- 7} to 10^{- 8}$
$X$ - rays	$10^{- 8} to 10^{- 13}$
$λ$ - rays	$10^{- 10} to 10^{- 16}$

Study Table and answer the questions.

EASY

AS and A Level

IMPORTANT

Physics for Cambridge International AS & A Level Coursebook 3rd Edition Digital Access>Chapter 12 - Waves>Questions>Q 12

Type of electromagnetic waves	Wavelength range / $m$
Radio waves	$> 10^{6} to 10^{- 1}$
Microwaves	$10^{- 1} to 10^{- 3}$
Infrared	$10^{- 3} to 7 \times 10^{- 7}$
Visible	$7 \times 10^{- 7}$ (red to $4 \times 10^{- 7}$ (violet)
Ultraviolet	$4 \times 10^{- 7} to 10^{- 8}$
$X$ - rays	$10^{- 8} to 10^{- 13}$
$λ$ - rays	$10^{- 10} to 10^{- 16}$

Study Table and answer the questions.

(d) What is the range of wavelengths of visible light, in nanometres?

An oscillator is used to send a transverse wave along a stretched string. The wavelength of the wave is 5.0 cm when the frequency of the oscillator is 30 Hz. For this wave, calculate: (b) Its speed.

Important Questions on Waves

Learn and Prepare for any exam you want !

An oscillator is used to send a transverse wave along a stretched string. The wavelength of the wave is $5.0 cm$ when the frequency of the oscillator is $30 Hz$ . For this wave, calculate:

(b) Its speed.