List of top Physics Questions on Spherical Mirrors asked in JEE Advanced

A thin convex lens is made of two materials with refractive indices $n_1$ and $n_2$, as shown in figure. The radius of curvature of the left and right spherical surfaces are equal. / is the focal length of the lens when $n_1$ = $n_2$ = n. The focal length is $f+\Delta f$ when $n_1$ = n and $n_2 = n + \Delta n$. Assuming $\Delta n << (n ? 1)$ and $1 < n < 2$, the correct statement(s) is/are,

A container is filled with water ($\mu$ = 1.33) up to a height of 33.25 cm. A concave mirror is placed 15 cm above the water level and the image of an object placed at the bottom is formed 25 cm below the water level. The focal length of the mirror is

A concave lens of glass, refractive index 1.5 has both surfaces of same radius of curvature R. On immersion in a medium of refractive index 1.75, it will behave as a

A concave mirror is placed on a horizontal table with its axis directed vertically upwards. Let O be the pole of the mirror and C its centre of curvature. A point object is placed at C. It has a real image, also located at C. If the mirror is now filled with water, the image will be