Assertion: In the figure shown, zero order maxima will lie above point O.

Reason: Zero order maxima normally means a point where path difference is zero.

Assertion In the YDSE set up shown in figure a glass slab is inserted in front of the slit S_(1) as shown in figure Then zero order maxima (where path difference =0) will lie above point O. Reason Glass slab will produce an extra path difference in the path of the ray passing through S_(1)

Assertion In the YDSE set up shown in figure a glass slab is inserted in front of the slit S_(1) as shown in figure Then zero order maxima (where path difference =0) will lie above point O. Reason Glass slab will produce an extra path difference in the path of the ray passing through S_(1)

Zero order reaction means that

Zero order reaction means that

Assertion: Two coherent sources S_1 and S_2 are placed in front of a screen as shown in figure. At point P, 10th order maxima is obtained. Then , 11th order maxima will be obtained above P. Reason: For 11th order maxima path difference should be more.

Assertion: Two coherent sources S_1 and S_2 are placed in front of a screen as shown in figure. At point P, 10th order maxima is obtained. Then , 11th order maxima will be obtained above P. Reason: For 11th order maxima path difference should be more.

Distance between the slit shown in figure is d = 20 lambda , where lambda is the wavelength of light used. Find the angle theta where a. central maxima (where path difference is zero) is obtained, and b. third-order maxima is obtained.

Distance between the slit shown in figure is d = 20 lambda , where lambda is the wavelength of light used. Find the angle theta where a. central maxima (where path difference is zero) is obtained, and b. third-order maxima is obtained.

Assertion: In the YDSE apparatus shown in figure dltltD and d/lambda = 4 , then second order maxima will be obtained at theta = 30^@ Reason: Total seven maxima will be obtained on screen.