In a typical Young’s double slit experiment, S_1 and S_2 are identical slits and equidistant from a pointmonochromatic source S of light havingwavelength λ . The distance between slits isrepresented by d and that between slits and screenis represented by D. P is a fixed point on the screen at a distance y_0 = \frac{\lambdaD_0}{2d_0} from central order bright on the screen: where D_0,d_0 are initial values of D and d respectively. In each statement of column-I some changes are made to abovementioned situation. The effect of corresponding changes is given in column-II. Match the statement incolumn-I with resulting changes in column-II. Column-I Column-II A)The distance d between the slits isdoubled keeping the source equidistant P) Fringe width decreases B)The distance D between slit and screen isdoubled by shifting screen to right Q)Magnitude of optical path difference betweeninterfering waves at P will decrease C)The distance D between slit and screen ishalved by shifting screen to left R)Magnitude of optical path difference betweeninterfering waves at P will increase D)The whole setup is submerged in waterof refractive index 4/3 S) The intensity at P will increase T) Intensity at P will decrease

Correct Answer is : A - P , R , S ; B - R , S ; C - P , R , S ; D - P , S

A - P , R , S ; B - P , R , S ; C - P , R , S ; D - P

A - P , Q , R , S ; B - R , S ; C - P , R , S ; D - P , Q , S

A - P , R , S ; B - R , S ; C - P , R , S ; D - P , S

A - P , R , S ; B - R ; C - P , R , S ; D - P , Q , S

JEE Advanced Model Paper 19 with solutions for online practice

Question : 59 of 60

Marks: +1, -0

In a typical Young’s double slit experiment, S1 and S2 are identical slits and equidistant from a pointmonochromatic source S of light havingwavelength λ . The distance between slits isrepresented by d and that between slits and screenis represented by D. P is a fixed point on the screen at a distance y0 =

λD0

2d0

from central order bright on the screen: where D0,d0 are initial values of D and d respectively. In each statement of column-I some changes are made to abovementioned situation. The effect of corresponding changes is given in column-II. Match the statement incolumn-I with resulting changes in column-II.

Column-I	Column-II
A)The distance d between the slits isdoubled keeping the source equidistant	P) Fringe width decreases
B)The distance D between slit and screen isdoubled by shifting screen to right	Q)Magnitude of optical path difference betweeninterfering waves at P will decrease
C)The distance D between slit and screen ishalved by shifting screen to left	R)Magnitude of optical path difference betweeninterfering waves at P will increase
D)The whole setup is submerged in waterof refractive index 4/3	S) The intensity at P will increase
	T) Intensity at P will decrease

A - P , R , S ; B - P , R , S ; C - P , R , S ; D - P
A - P , Q , R , S ; B - R , S ; C - P , R , S ; D - P , Q , S
A - P , R , S ; B - R , S ; C - P , R , S ; D - P , S
A - P , R , S ; B - R ; C - P , R , S ; D - P , Q , S

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