A concave mirror of focal length 20 cm and a convex lens of focal length 10 cm are kept with their optic axes parallel but separated by 0.5 cm as shown in figure. The distance between lens and mirror is 10 cm. An object of height 3 mm is placed on the optic axis of lens at a distance
15 cm from the lens. Find length of image formed by mirror in mm.
Text Solution
Verified by ExpertsThe correct answer is:
CHECK THE SOLUTION.
Ans. Self Teacher
Sol. For image formed by lens
= 
⇒ v 1 = + 30 cm
i.e. 20 cm behind mirror
For mirror 
= 
⇒ v 2 = – 10 cm
Overall magnification = 
= –1
Length of image = 1 × 3 = 3 mm
Prepare Smarter with CGP Edu
Get practice questions, solutions, and test series in one place.
Write a Review
Share your experience with this question and solution.
Commentary
Send your comment, doubt, correction, or feedback to admin.
Similar Questions
Explore conceptually related problems
A student can distinctly see the object upto a distance 15 cm . He wants to see the black board at …
Two plane mirrors. A and B are aligned parallel to each other, as shown in the figure. A light ray …
A concave mirror of focal length is used to obtain the image of the sun which subtends an angle of…
A square of side is placed at a distance of from a concave mirror of focal length The centre of …
A thin rod of length lies along the axis of a concave mirror of focal length One end of its magni…
A ray of light falls on the surface of a spherical glass paper weight making an angle with the nor…