The given figure shows a YDSE apparatus. Parallel monochromatic coherent light rays are incident on slits {S}_{1} and {S}_{2} ( {S}_{1} {S}_{2}=\frac{2}{3} {mm}) at an angle 30^{\circ} with the horizontal. The medium on left side of the slits is water (\mu_{w}=4 \/ 3). To obtain the central maxima at point {P}, a glass slab (\mu_{g}=3 \/ 2) inside water is introduced in front of slit S_{1} The thickness of the glass slab required for this purpose is

JEE Advanced 2020 Full Test 4 Paper 1

Question : 6 of 54

Marks: +1, -0

The given figure shows a YDSE apparatus. Parallel monochromatic coherent light rays are incident on slits S1 and S2 (S1S2=‌

mm) at an angle 30∘ with the horizontal. The medium on left side of the slits is water (µw=4∕3). To obtain the central maxima at point P, a glass slab (µg=3∕2) inside water is introduced in front of slit S1 The thickness of the glass slab required for this purpose is

2mm
4∕3mm
4mm
8∕3mm

Validate

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