diffraction grating

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Wavelength of an incident light when it is incident normally on a diffraction grating having 3000 lines per centimeter angular separation is 10° is

Wavelength of an incident light when it is incident normally on a diffraction grating having 3000 lines per centimeter angular separation is 10° is
  • A. 500 nm
  • B. 650 nm
  • C. 580 nm
  • D. 600 nm
  • Correct Answer: Option C

Fringes are referred to as

Fringes are referred to as
  • A. minima
  • B. maxima
  • C. nodes
  • D. normal points
  • Correct Answer: Option B

With diffraction grating, angles are

With diffraction grating, angles are
  • A. small
  • B. greater
  • C. zero
  • D. close to zero
  • Correct Answer: Option B

Grating element is equal to

Grating element is equal to
  • A. nλ/sinθ
  • B.
  • C. sinθ
  • D. cosθ
  • Correct Answer: Option A

Splitting of white light in to constituent colors is called

Splitting of white light in to constituent colors is called
  • A. diffraction
  • B. refraction
  • C. reflection
  • D. dispersion
  • Correct Answer: Option D