Wave Optics Tes...

Light of wavelength $$600$$ is incident on a single slit. The first minimum of the diffraction pattern is obtained pattern is obtained at a distance of 4  from the center. The distance between the screen and the slit is 2m. What is the width of slit?

In a Young's double slit experiment, constructive interference is produced at a certain point $$P$$. The intensities of light at $$P$$ due to the individual sources are $$4$$ and $$9$$ units. The resultant intensity at point $$P$$ will be-

When waves of same intensity from two coherent sources reach a point with zero path different the resulting intensity is K . When the above path difference is $$\lambda /4$$ the intensity becomes

The wavelength of characteristic $$X \text { -ray } K _ { \alpha }$$ a line emitted by hydrogen like atom is $$0.32 \mathrm { A } ^{ \circ }$$. The wavelength of $$K _ { \beta }$$ line emitted by the same element is 

$$ s_1 $$ and $$s_1 $$ are two sources of sound emitting sine waves. The two sporces are in phase. The source emittied by the two sources interfere at point F. The waves of wavelength:

In the ideal YDSE when a glass plate $$(RI= 1.5)$$ of thickness t is introduced in path of one of interfering beams , the intensity at the position where central maximum occurred previously remains unchanged. The minimum thickness of glass plate is :

The velocity of a moving galaxy is $$300 km s^{-1}$$ and the apparent change in wavelength of a spectral line emitted from the galaxy is observed as 0.5 nm. Then, the actual wavelength of the spectral line is

In Young's double slit experiment $$10th$$ order maxima is obtained at the point of  observation in the interference pattern for $$\lambda = 7000 A^o$$. If the source is replaced by another one of wavelength $$5000\ A^o$$  then the order of maximum at the same point will be 

Fringe width will be more wide for which color? 

A monochromatic light is incident on a single slit of width $$24\times 10^{-5}\ cm$$. Calculate wavelength of light if angular position of $$1^{st}$$ secondary maxima is $$30^{o}$$.