Wave Optics Tes...

A rocket is going away from the earth at a speed of $$10\ m/s$$ If the wavelength of the light wave emitted by it be $$5700\ overset{o}{A}$$, what will be its Doppler's shift

If a star is moving towards the earth, then the lines are shifted towards

Diffraction and interference of light suggest

If the separation between slit in Young's double slit experiment is reduced to $$\dfrac 13 rd$$, the fringe width becomes $$n$$ times. The value of $$n$$ is 

How does the red shift confirm that the universe is expanding

A star is going away from the earth. An observer on the earth will see the wavelength of light coming from the star

The $$k$$ line of singly ionised calcium has a wavelength of $$393.3\ nm$$ as measured on earth. In the spectrum of one of the observed galaxies, this spectral line is located at $$401.8\ nm$$. The speed with which the galaxy is moving away from us, will be

In young double slit experiment the maximum intensity of light  is $$ I_{max}$$ then the intensity of light of the path difference  $$ \dfrac{\lambda }{2}$$ will be

The galaxies are moving away from each other. It is explained by

Suppose you perform Young's double-slit experiment with the slit separation slightly smaller than the wavelength of the light. As a screen, you use a large half-cylinder with its axis along the midline between the slits. What interference pattern will you see on the interior surface of the cylinder?