diffraction of waves

mcqspedia.com has 4 Question/Answers about Topic diffraction of waves

Microwaves have wavelength of about

Microwaves have wavelength of about
  • A. 10 cm
  • B. 20 cm
  • C. 30 cm
  • D. 40 cm
  • Correct Answer: Option A

Spreading of wave as it passes through a gap or around an edge is called

Spreading of wave as it passes through a gap or around an edge is called
  • A. reflection
  • B. refraction
  • C. diffraction
  • D. superposition
  • Correct Answer: Option C

For listening radio in cars, external radio aerials are used because

For listening radio in cars, external radio aerials are used because
  • A. radio waves have shorter wavelength
  • B. radio waves have longer wavelength
  • C. radio waves cannot pass through window
  • D. radio waves require a medium to propagate
  • Correct Answer: Option B

Effect of diffraction is greatest if waves pass through a gap with width equal to

Effect of diffraction is greatest if waves pass through a gap with width equal to
  • A. frequency
  • B. wavelength
  • C. amplitude
  • D. wavefront
  • Correct Answer: Option B