What is the correct order of electromagnetic waves in order of increasing frequency?

microwaves, infra-red, ultraviolet, X-rays, gamma rays

Material A and B have identical refractive indexes. Which student prediction is correct?

The ray of light will continue without bending.

The diagram below shows two sound waves, A and B. Which statement describes wave B?

quieter and lower pitched than wave A

The diagram below shows two sound waves, A and B. Which statement describes wave B?

louder and higher pitched than wave A

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IGCSE™️ Physics: Waves

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Aligned to Cambridge IGCSE™️. Suitable for ages 14-16. Test your knowledge on Waves. #IGCSE #Physics #science (This resource is not endorsed by Cambridge Assessment International Education)

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Questions 10

Answers

1
Which equation relates the refractive index to the critical angle?
n=\sin c^2
n=\frac{1}{\sin c}
\frac{1}{n}=\frac{1}{\sin c}
\frac{n}{\sin c}=1
2
What is the correct order of electromagnetic waves in order of increasing frequency?
microwaves, infra-red, ultraviolet, X-rays, gamma rays
X-rays, infra-red, visible, microwaves, radio waves
radio waves, infra-red, visible, X-rays, ultraviolet
gamma rays, ultraviolet, infra-red, visible, radio waves
3
What happens to a sound if you increase its frequency?
It will sound lower pitched.
It will sound quieter.
It will sound louder.
It will sound higher pitched.
4
Wave A is used as a security scanner in airports. Wave B has a shorter wavelength. What might Wave B be used for?
killing cancer cells
long-range communication on Earth
heating or cooking food
a TV remote control
5
Identify the correct ray after the incident ray hits a plane mirror.
D
B
C
A
6
Which of the following statements about images formed from a magnifying lens is true?
Virtual, inverted and magnified
Real, inverted and diminished
Real, upright and magnified
Virtual, upright and magnified
7
Orange light has a frequency of 5 × 10¹⁴ Hz and a speed of 3 × 10⁸ m/s. Which gap size would cause the most diffraction?
6 × 10−8 m
6 × 105 m
6 × 10−7 m
6 × 107 m
8
Material A and B have identical refractive indexes. Which student prediction is correct?
The light will refract.
The light will be reflected at the boundary.
The ray of light will continue without bending.
The light will bend towards the normal.
9
The diagram below shows two sound waves, A and B. Which statement describes wave B?
quieter and lower pitched than wave A
louder and lower pitched than wave A
quieter and higher pitched than wave A
louder and higher pitched than wave A
10
The diagram below shows two sound waves, A and B. Which statement describes wave B?
quieter and lower pitched than wave A
louder and higher pitched than wave A
louder and lower pitched than wave A
quieter and higher pitched than wave A

IGCSE™️ Physics: Waves Flashcards | StudBud