Wave Optics Tes...

A plane wavefront $$(\lambda=6 \times 10^{-7}\ m)$$ falls on a slit $$0.4\ mm$$ wide. A convex lens of focal length $$0.8\ m$$ placed behind the slit focuses the light on a screen. What is the linear diameter of second maximum

The phase difference between incident wave and reflected wave is $$180^o$$ when light ray

Following figure shows sources $$S_{1}$$ and $$S_{2}$$ that emits light of wavelength $$\lambda$$ in all directions. the sources are exactly in phase and are seperated by a distance equal to $$1.5\lambda .$$ If we start at the indicated start point abd travel along path $$1$$ and $$2,$$ the interference produce a maxima all along 

Which of the following is not a property of light

In the Young's double slit experiment, for which colour the fringe width is least

In a Young's experiment, monochromatic light is used to illuminate the two slits $$A$$ and $$B$$. Interference fringes are observed on a screen placed in front of the slits. Now if a thin glass plate is placed normally in the path of the beam coming from the slit

The sun is rotating about its own axis. The spectral lines emitted from the two ends of its equator, for an observer on the earth, will show

A star emits light of $$5500 \overset{o}{A}$$ wavelength. Its appears blue to an observer on the earth, it means

In the set up shown in fig the two slits, $$S_{1}$$ and $$S_{2}$$ are not equidistant from the slits $$S.$$ The central fringe at $$O$$ is them 

Specific rotation of sugar solution is $$0.01$$ SI units. $$200\ kgm^{-3}$$ of impure sugar solution is taken in a polarimeter tube of length $$0.25\ m$$ and an optical rotation of $$0.4\ rad$$ is observed. The percentage of purity of sugar is the sample is