Navigate

A linear aperture whose width is 0.02 cm is placed immediately in front of a lens

A linear aperture whose width is 0.02 cm is placed immediately in front of a lens of focal length 60 cm. The aperture is illuminated normally by a parallel beam of wavelength 5×10⁻⁵ cm. The distance of the first dark band of the diffraction pattern from the centre of the screen is

Options

(a) 0.10 cm
(b) 0.25 cm
(c) 0.20 cm
(d) 0.15 cm

Correct Answer:

0.15 cm

Explanation:

No explanation available. Be the first to write the explanation for this question by commenting below.

NEET2016
admin:

Related Questions

  1. A plane wave of wavelength 6250Å is incident normally on a slit of width 2×10⁻² cm.
  2. The angular momentum of an electron is J. The magnitude of the magnetic moment
  3. Cathode rays are produced when the pressure is of the order of
  4. The near point and far point of a person are 40 cm and 250 cm, respectively.
  5. A machine gun fires 10 bullets/s,each of mass 10 g,the speed of each bullet