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An object is 8 cm high. It is desired to form a real image 4 cm high at 60 cm from the mirror. The type of mirror needed with the focal length is
Options
(a) convex mirror with focal length f=40 cm
(b) convex mirror with focal length f=20 cm
(c) concave mirror with focal length f=-40 cm
(d) concave mirror with focal length f=-20 cm
Correct Answer:
convex mirror with focal length f=40 cm
Explanation:
No explanation available. Be the first to write the explanation for this question by commenting below.
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Topics: Ray Optics
(94)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- The temperature of ideal gas is reduced from 927° C to 27° C. The r.m.s velocity
- The wavelength of the short radio waves, microwaves, ultraviolet waves are λ₁,λ₂ and λ₃
- The earth is assumed to be a sphere of radius R. A platform is arranged at a height R
- The force of repulsion between two electrons at a certain distance is F.
- A force of 5 N is acting on an object. Displacement of object is 10 m and the work done
Topics: Ray Optics (94)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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