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Question
Physics
Diameter of the objective lens of a telescope is 250 cm. For light of wavelength 600 nm. coming from a distant object, the limit of resolution of the telescope is close to :
Q. Diameter of the objective lens of a telescope is
250
c
m
. For light of wavelength
600
nm
. coming from a distant object, the limit of resolution of the telescope is close to :
2639
225
JEE Main
JEE Main 2019
Wave Optics
Report Error
A
1.5
×
1
0
−
7
r
a
d
24%
B
2.0
×
1
0
−
7
r
a
d
27%
C
3.0
×
1
0
−
7
r
a
d
25%
D
4.5
×
1
0
−
7
r
a
d
25%
Solution:
Limit of resolution
=
d
1.22
λ
=
250
×
1
0
−
2
1.22
×
600
×
1
0
−
9
=
2.9
×
1
0
−
7
rad