Question
Hard
Solving time: 5 mins
Radius of curvature of a concave spherical surface separating air-glass medium is . A point object is placed on the principal axis in the glass . For the image to be real, seen by the observer in air, distance of object from should be . Then the minimum value of is
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Text solutionVerified
Using lens maker formula, we get
For to be positive
For to be positive
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Question Text | Radius of curvature of a concave spherical surface separating air-glass medium is . A point object is placed on the principal axis in the glass . For the image to be real, seen by the observer in air, distance of object from should be . Then the minimum value of is |
Topic | Ray Optics and Optical Instruments |
Subject | Physics |
Class | Class 12 |
Answer Type | Text solution:1 |
Upvotes | 98 |