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Byju's Answer
Standard X
Physics
Lens Maker's Formula
Ray diagram f...
Question
Ray diagram for two lenses kept ar a some distance given in diagram, which of the following option is correct(f1,f2=focal lenghth, d=distance between two lenses) (1) f1 +f2> d (2) f1+f2
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Similar questions
Q.
Ray diagram for two lenses kept at some distance given in the diagram,which of the following option is correct (
f
1
,
f
2
=
focal length;
d
=
distance between lenses )
Q.
In the adjoining diagram, distance between two lenses will be (
F
1
and
F
2
are focal length of two lenses)
Q.
Two thin convex lenses of focal length
f
1
a
n
d
f
2
are separated by a horizontal distance d (where
d
<
f
1
,
d
<
f
2
) and their centers are displaced by a vertical separation
Δ
as shown in figure.
Taking the origin of coordinates O at the center of the first lens, the x and y coordinates of the focal point of this lens system, for a parallel beam of rays coming from the left, are given by:
Q.
Assertion :Two convex lenses of same material and equal focal length
′
f
′
from achromatic combination when separated by distance
′
f
′
. Reason:
1
F
=
1
f
1
+
1
f
2
−
d
f
1
f
2
where
F
=
equivalent focal length of lenses having focal lengths
f
1
and
f
2
separated by a distance
′
d
′
Q.
Two convex lenses of focal lengths
f
1
and
f
2
form images with magnification
m
1
and
m
2
, when used individually for an object kept at the same distance from the lenses. Then
f
1
/
f
2
is:
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