Verified Solution • 2025–26 Session
moderate
QJEEM19Pha59b: JEE Main 2019 Physics - Class 12 JEEM19Pha59b Solution: A concave mirror has radius of curvature of 40 cm. It is at the …
A concave mirror has radius of curvature of 40 cm. It is at the bottom of a glass that has water filled up to 5 cm (see figure). If a small particle is floating on the surface of water, its image as seen, from directly above the glass, is at a distance d from the surface of water. The value of d is dose to: (Refractive index of water = 1.33) 
Multiple Choice Options
- A 11.7 cm
- B 6.7 cm
- C 13.4 cm
- D 8.8 cm
Step-by-Step Verified Solution
Light incident from particle P will be reflected at mirror.
u = 5cm, f =
This image will act as object for light getting refracted at water surface.
So, object distance
Below water surface.
After refraction, final image is at
=
u = 5cm, f =
This image will act as object for light getting refracted at water surface.
So, object distance
Below water surface.
After refraction, final image is at
=