Q)
(chatquestion)...lengths of objective and
eyepiece are
(1) 18, 18
(2) 20, 16
(3) 30, 6
(4) 12, 24
e refractive
41. A prism of material refractive index u has refracting
angle A. For which of the following conditions there
will be no emergent light whatever may be the
angle of incidence?
Then
47.
A]
(2) = sinA
(1)
uis
(3) u = cosA
(4) µ = secA
4.
ugh 40° for
y 20°. The
42. In standard notations, the condition for dispersion
without deviation in thin prism combination is...(41)
...
