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JEE Mains 02-Sep-2020 Shift 1 Solved Paper
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© examsnet.com
Question : 1
Total: 75
PHYSICS
A spherical mirror is obtained as shown in the figure from a hollow glass sphere. If an object is positioned in front of the mirror, what will be the nature and magnification of the image of the object ? (Figure drawn as schematic and not to scale)
Inverted, real and magnified
Erect, virtual and magnified
Erect, virtual and unmagnified
Inverted, real and unmagnified
Validate
Solution:
f
=
−
8
2
=
−
4
c
m
u
=
−
10
c
m
v
=
?
as
1
v
+
1
u
=
1
f
1
v
+
(
1
−
10
)
=
1
−
4
1
v
=
1
10
−
1
4
1
v
=
4
−
10
40
v
=
40
−
6
v
=
−
20
3
m
=
−
v
u
m
=
−
(
−
20
3
)
−
10
⇒
m
=
−
2
3
or image will be real, inverted and unmagnified.
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