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
Maximum details of an object can be seen by a microscope when the object is illuminated by light of:
Difficulty: Easy
A:
Longer $\lambda$
B:
Shorter $\lambda$
C:
Infrared light
D:
None
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