A plane wavefront `(lambda=6xx10^-7m)` falls on a slit `0.4m` wide. A convex lens of focal length `0.8m` placed behind the slit focuses the light on a screen. What is the linear diameter of second maximum?

What is the power of a convex lens of focal length 0.5 m?

what is the power of a convex lens having focal length 0.5 m ?

A convex lens of focal length 10.0 cm is placed in contact with a convex lens of 15.0 cm focal length. What is the focal length of the combination ?

An object is placed at 0.06 m from a convex lens of focal length 0.1 m. Calculate the position of the image?

A convex lens of focal length 30 cm and a concave lens of focal length 0.6m are placed in contact. Find the power of the combination.

Light of wavelength lambda = 5890 Å fall on a double-slit arrangement having separation d = 0.2 mm . A thin lens of focal length f = 1 m is placed near the slits. The linear separation of fringes on a screen placed in the focal plane of the lens is

Light of wavelength lambda = 5890 Å fall on a double-slit arrangement having separation d = 0.2 mm . A thin lens of focal length f = 1 m is placed near the slits. The linear separation of fringes on a screen placed in the focal plane of the lens is

A light of wavelength lambda falls on a narrow slit of width d.A diffraction fringe is formed on a screen placed at distance D from the slit. If the linear width of the central maximum equals to the width of the slit, will be the value of D?