Two capacitors of different capacitances are connected first (1) in series and then (2) in parallel…
A dielectric slab of dielectric constant K and thickness t’ is inserted between plates of a paralle…
In Young’s double slit experiment, the slits S, and S, are 3 mm apart and the screen is placed 1.0 …
State Huygen’s principle and verify laws of reflection using suitable diagram. Ans. Huygens' Princi…
Differentiate between a wavefront and a ray Ans. Wavefront: Represents points in space that are in …
The magnification of a small object produced by a compound microscope is 200. The focal length of t…
Why are multi-component lenses used for both the objective and the eyepiece in optical instruments?…
Draw a ray diagram for the formation of the image of an object by a convex mirror. Hence, obtain th…
A beam of light coming parallel to the principal axis of a convex lens L, of focal length 16 cm is …
A thin convex lens L of focal length 10 cm and a concave mirror M of focal length 15 cm are placed …
The focal length of an equiconvex lens (A) increases when the lens is dipped in water. (B) increase…
The radii of curvature of two surfaces of a convex lens are R and 2R. If the focal length of this l…
