Optical Instruments

MM

Mashaal Masha

Oct 15, 2022

Choose the correct options for the following questions.

In the formula R=N*m for the diffraction grading, N denotes:

Difficulty: Easy

A:

No. of lines/cm

B:

No. of lines/m

C:

Total number of lines

D:

None

Certain light of wavelength 600 nm is used to view an object under the microscope. If the aperture of its objective is 1.22 cm, then the limiting angle of resolution will be:

Difficulty: Easy

A:

6\times 10^{-5} rad

B:

7\times 10^{-5} rad

C:

8\times 10^{-5} rad

D:

None