CIE Physics IGCSE Unit 3: Waves Quiz

What is the primary characteristic of waves?

• Waves transfer matter
• Waves transfer energy
• Waves do not oscillate
• Waves only travel in one direction

In a transverse wave, how do the particles move in relation to the direction of wave travel?

• In the same direction
• At an angle
• In a circular motion
• At right angles

What happens to the speed of a wave when it enters a more optically dense medium?

• It increases
• It decreases
• It remains the same
• It becomes zero

Which of the following best describes the relationship between frequency, wavelength, and speed of a wave?

• Speed = Wavelength + Frequency
• Speed = Frequency / Wavelength
• Speed = Frequency × Wavelength
• Speed = Wavelength - Frequency

What is the angle of incidence equal to when a wave reflects off a smooth surface?

• Angle of refraction
• Angle of dispersion
• Angle of reflection
• Angle of deviation

When light is refracted, which property remains unchanged?

• Speed
• Wavelength
• Frequency
• Angle of incidence

What occurs during total internal reflection?

• Light passes through the medium
• Light bends away from the normal
• Light reflects back into the medium
• Light is absorbed by the medium

What type of image is formed by a converging lens when the object is placed closer than the focal length?

• Real and inverted
• Virtual and upright
• Real and upright
• Virtual and inverted

Which of the following colors of light has the longest wavelength?

• Violet
• Blue
• Red
• Green

What is the purpose of cladding in optical fibers?

• To enhance light absorption
• To prevent light loss
• To increase the speed of light
• To change the color of light