NEETGeometrical OpticsMedium
Question
A point object O is placed at a distance of 20 cm from a convex lens of focal length 10 cm as shown in figure. At what distance x from the lens should a concave mirror of focal length 60 cm. placed so that final image coincides with the object -
Options
A.10 cm
B.15 cm
C.20 cm
D.final image can never coincide with object in the given conditions
Solution
⇒ v = 20 cm ∴ R for mirror = 2f = 2 × 60 = 120 cm
∴ x = 20 + R = 20 + 120 = 140 cm
Create a free account to view solution
View Solution FreeMore Geometrical Optics Questions
When a pin is moved along the principle axis of a small concave mirror, the image position coincides with the object at ...The minimum distance between the object and its real image for concave mirror is...The focal length of a concave mirror is 12 cm. Where should an object of length 4 cm be placed, so that a real image of ...A point source of light S is placed in front of two large mirrors as shown. Which of the following observers will see on...Two thin lenses are in contact and focal length of combination is 80cm If focal length of one lens is 20cm. Then power o...