List of top Physics Questions on Ray optics and optical instruments asked in JEE Main

A convex lens has a focal length of f = 20 cm, R1 = 15 cm, R2 = 30 cm. The refractive index of the lens is \(\frac{x}{2}\) The value of x is _______ .

Assertion (A): Object at radius of curvature of biconvex lens made by glass (u = 1.5) form image at same distance an other side of the lens.
Reason (R): Image of a real object formed by concave lens is always virtual and erect.

Two thin convex lenses of focal lengths f1 and f2 are separated by a horizontal distance d (where d < f1, d < f2) and their centers are displaced by a vertical separation Δ as shown in the figure.

Taking the origin of coordinates, O at the center of the first lens, the x and y-coordinates of the focal point of this lens system, for a parallel beam of rays coming from the left, are given by

A thin concave lens is in contact with a thin convex lens. The ratio of their magnitude of the focal length is $\frac{3}{2}$ and the focal length of the combined lens is $30$ cm. The focal lengths of the individual lenses are

The angle of polarization of glass is 58° and that for water is 53°. The angle of polarization for glass in water is