Question

A diffraction grating has 2000 lines/cm. Its grating element is
(a) 5x10m
(b) 2x10 cm
(c) 5x104m
(d) 5x10m
A distruction grating has 200 lines com. Ite grating element is​

Answer 1

Answer:

A)5×10 m

Explanation:

1/N =1/2000 =5×10 m

Answer 2

Answer:

A diffraction grating has 2000 lines/cm. Its grating element is (a) 5 × 10^-6 m

A diffraction grating has 200 lines/cm. Its grating element is 5 × 10^-5 m

Explanation:

• The light composed of different wavelengths, that is generally a white light into numerous light components of wavelength is divided by an optical element called diffraction grating.
• It can be simply stated that, the diffraction grating is an element which separates the colours in an incident light.
• The grating element is manufactured by drawing parallel lines on glass plate using a fine diamond point.
• The etched lines act as opaque spacing and the glass between the two lines act as slit.
• Width of each slit and the opaque space combined is called grating element.
• The formula for diffraction grating and number of lines is given by, d = 1/N .
• 'N' denotes the number of lines.
• 'd' is the diffraction grating.

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