NEET Physics Optical Instruments MCQ Question
Refer to the diagram showing an equiconvex lens in contact with a liquid layer on a plane mirror. If the needle's image coincides with its position at a distance of 45.0 cm with the liquid and 30.0 cm without the liquid, what is the refractive index of the liquid?
1.33
1.40
1.50
1.60
Correct Answer
Detailed Explanation
Using the lens formula and the given distances, the refractive index of the liquid can be calculated. When the liquid is present, the effective focal length changes, allowing us to compute the refractive index of the liquid to be 1.33.
Found an issue with this question?
Related Questions
More from Optical Instruments
Assertion (A): The thin lens formula is applicable to both convex and concave lenses for real and virtual images. | Reason (R): The focal points of a ...
Match Column-I with Column-II. Column-I Column-II (a) Simple Microscope (i) Used for terrestrial observations (b) Refracting Telescope (...
More from
Consider a diagram where a parallel beam of light is incident on a concave mirror. The reflected rays converge at a point on the principal axis. What ...
The optical density of turpentine is higher than that of water while its mass density is lower. Figure shows a layer of turpentine floating over water...
A 2.5 cm tall object is placed 27 cm in front of a concave mirror with a radius of curvature of 36 cm. At what distance from the mirror will the scree...