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KCET 2020 Physics Solved Paper
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© examsnet.com
Question : 12
Total: 60
Two poles are by a distance of 3.14 𝑚. The resolving power of human eye is 1 𝑚𝑖𝑛𝑢𝑡𝑒 of an arc. The maximum distance from which he can identify the two poles distinctly is
376 𝑚
10.8 𝑘𝑚
5.4 𝑘𝑚
188 m
Validate
Solution:
Given the lateral separation of the poles
d
=
3.14
m
The resolving power of the eye is
θ
=
1
min
=
π
60
×
180
r
a
d
The maximum distance from which poles are distinctly visible is
D
=
d
θ
⇒
D
=
3.14
×
60
×
180
π
=
10800
m
=
10.8
k
m
© examsnet.com
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