1
JEE Main 2020 (Online) 6th September Evening Slot
+4
-1
A double convex lens has power P and same radii of curvature R of both the surfaces. The radius of curvature of a surface of a plano-convex lens made of the same material with power 1.5 P is :
A
$${R \over 3}$$
B
$${{3R} \over 2}$$
C
$${R \over 2}$$
D
2R
2
JEE Main 2020 (Online) 6th September Morning Slot
+4
-1
A point like object is placed at a distance of 1 m in front of a convex lens of focal length 0.5 m. A plane mirror is placed at a distance of 2 m behind the lens. The position and nature of the final image formed by the system is :
A
2.6 m from the mirror, real
B
1 m from the mirror, real
C
2.6 m from the mirror, virtual
D
1 m from the mirror, virtual
3
JEE Main 2020 (Online) 5th September Morning Slot
+4
-1
For a concave lens of focal length f, the relation between object and image distances u and v, respectively, from its pole can best be represented by (u = v is the reference line) :
A
B
C
D
4
JEE Main 2020 (Online) 2nd September Morning Slot
+4
-1
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)
A
Inverted, real and unmagnified
B
Inverted, real and magnified
C
Erect, virtual and magnified
D
Erect, virtual and unmagnified
EXAM MAP
Medical
NEET