What is a Transverse wave ?

wave that has particles that vibrate perpendicular to wave direction

Wave that has particles vibrating up and down

wave that has particles vibrating left and right

wave that has particles that vibrate parallel to wave direction

A light wave travels from air into plastic. which is true?

frequency , speed and wavelength reduces

Physics Revision : Waves

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| By Mrguienghong

Mrguienghong

Community Contributor

Quizzes Created: 2 | Total Attempts: 3,251

Questions: 7 | Attempts: 3,075 | Updated: Apr 12, 2024

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For sec 3/4/5 Physics students revision by mr gui eng hong Singapore

Questions and Answers

1.

What is a Transverse wave ?
- A.
  
  Wave that has particles vibrating up and down
- B.
  
  Wave that has particles vibrating left and right
- C.
  
  Wave that has particles that vibrate perpendicular to wave direction
- D.
  
  Wave that has particles that vibrate parallel to wave direction
Correct Answer
C. Wave that has particles that vibrate perpendicular to wave direction

Explanation
Transverse wave has particles vibrating perpendicular to wave. Longitudinal wave has particles vibrating parallel to wave.

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2.

Which wave is a Longitudinal wave?
- A.
  
  Sound wave
- B.
  
  Light wave
- C.
  
  Infra-Red wave
- D.
  
  X-ray
Correct Answer
A. Sound wave

Explanation
sound is the ONLY example of Longitudinal wave. the others are transverse waves

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3.

A wave makes 10 oscillations in 5s. What is its frequency?
- A.
  
  0.5 s
- B.
  
  0.5 Hz
- C.
  
  2 s
- D.
  
  2 Hz
Correct Answer
D. 2 Hz

Explanation
frequency is the number of oscillations made per second. 2 Hz means 2 oscillations made per second.

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1
0
4.

A 100 Hz wave has wavelength 2.0 m. What is its speed?
- A.
  
  0.02 m/s
- B.
  
  2 m/s
- C.
  
  50 m/s
- D.
  
  200 m/s
Correct Answer
D. 200 m/s

Explanation
speed = frequency x wavelength

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5.

A light wave travels from air into plastic. which is true?
- A.
  
  Frequency reduces
- B.
  
  Only speed reduces
- C.
  
  Frequency , speed and wavelength reduces
- D.
  
  Speed and wavelength reduces
Correct Answer
D. Speed and wavelength reduces

Explanation
frequency of wave depends on the source. when light slows down, frequency remains unchanged. since speed = frequency x wavelength, when speed decreases, wavelength also decreases

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6.

The speed of light in vacuum is . . .
- A.
  
  3 x 10^8 m/s
- B.
  
  308 m/s
- C.
  
  300 m/s
- D.
  
  3 x 108 m/s
Correct Answer
A. 3 x 10^8 m/s

Explanation
all elctromagnetic wave travels at 300 000 000 m/s in vacuum

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7.

V : speed. F: frequency L: wavelength T:period. which equation is correct?
- A.
  
  V=L/T
- B.
  
  V=LT
- C.
  
  V=F/T
- D.
  
  V=FT
Correct Answer
A. V=L/T

Explanation
F=1/T. V=FL = (1/T)L = L/T. Combine 2 equeations.

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2
0

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Current Version
Apr 12, 2024

Quiz Edited by
ProProfs Editorial Team
Jul 14, 2010

Quiz Created by
Mrguienghong

Physics Revision : Waves

What is a Transverse wave ?

Which wave is a Longitudinal wave?

A wave makes 10 oscillations in 5s. What is its frequency?

A 100 Hz wave has wavelength 2.0 m. What is its speed?

A light wave travels from air into plastic. which is true?

The speed of light in vacuum is . . .

V : speed. F: frequency L: wavelength T:period. which equation is correct?