Which of the following is the correct expression for the ratio of the – McqOptions

MCQOPTIONS

1.	Which of the following is the correct expression for the ratio of the intensity of principal maxima to the intensity of secondary maxima?
A.	1 + (N<sup>2</sup>-1) sin<sup>2</sup>
B.	1/1 + (N<sup>2</sup>-1) sin<sup>2</sup>
C.	(N<sup>2</sup>-1) sin<sup>2</sup>
D.	1/(N<sup>2</sup>-1) sin<sup>2</sup>
Answer» B. 1/1 + (N<sup>2</sup>-1) sin<sup>2</sup>

Discussion

No Comment Found

Related MCQs

A diffraction grating has 4000 lines/cm. The dispersive power of the grating in the third order spectrum in the wavelength region of 5000 is _____________
For a plane transmission grating with 5000 lines/cm what are the the absent order spectra if the width of the opacity is twice that of the frequency?
What is the highest order spectrum which may be seen with a monochromatic light of wavelength 5000 by means of a diffraction grating with 5000 lines/cm?
A beam of monochromatic light is incident on a plane transmission grating having 5000 lines/cm and the second order spectral line is found to be diffracted at 30 . The wavelength of the light is _______
What is the relation between the dispersive power, D, of a grating and the order, n, of a spectrum?
The expression for the maximum number of orders in a grating spectrum is given by ____________
If (a + b) < n , then nth order spectrum will be absent.
If there are N number of slits in a grating spectra, then there will be how many secondary maximas?
Which of the following is the correct expression for the ratio of the intensity of principal maxima to the intensity of secondary maxima?
The CDs available in the market act as ____________