N5 Waves Revision Quiz

In a transverse wave, how do the particles of the medium move?

• Parallel to the direction of energy travel

• Perpendicular to the direction of energy travel

• In a circular motion

• In a random motion

What happens to wave speed and wavelength when light enters a more optically dense material?

• Both increase

• Both decrease

• Wave speed decreases, wavelength increases

• Wave speed decreases, wavelength decreases

What is the formula for frequency in terms of number of waves and time?

• f = N × t

• f = N / t

• f = t / N

• f = N + t

What is diffraction?

• Bending of waves passing through a gap or around a barrier

• Reflection of waves off a surface

• Absorption of waves by a material

• Transmission of waves through a medium

What happens when waves diffract through a large gap?

• The entire wave changes direction

• Only the edges of the waves change direction

• The wave speed increases

• The wave speed decreases

What is the direction of particle motion in a longitudinal wave?

• Perpendicular to the direction of energy travel

• Parallel to the direction of energy travel

• In a circular motion

• In a random motion

Which detector is used for visible light?

• Aerial

• Photodiode

• Geiger Muller Tube

• Human skin

What is a source of Gamma Rays?

• Stars

• Radioactive nuclei

• Fluorescent tubes

• Electronic circuits

Which type of EM wave is used in medical tracers to detect cancer?

• X-Rays

• Ultra violet

• Gamma Rays

• Infra Red

What is the application of Ultra violet waves in detecting forged bank notes?

• Causes fluorescence

• Photographic film

• Aerial

• Geiger Muller Tube