1
IAT (IISER) 2024
MCQ (Single Correct Answer)
+4
-1
The refractive indices $(n)$ of two transparent slabs are 2 and $2 / \sqrt{3}$. They are attached together and placed in a third transparent medium of refractive index $\sqrt{2}$, as shown in the figure. The thickness of the upper slab is $I \mathrm{~cm}$. A monochromatic light ray is incident on the upper slab at $45^{\circ}$. What would be the thickness in cm of the lower slab such that the lateral shift of the ray after passing through both the slabs is zero? IAT (IISER) 2024 Physics - Ray Optics Question 1 English
A
$1 / 2$
B
$1 / \sqrt{2}$
C
$1 / \sqrt{3}$
D
$\sqrt{3} / 2$
2
IAT (IISER) 2024
MCQ (Single Correct Answer)
+4
-1

Two monochromatic sources emit light at wavelengths $\lambda$ and $\lambda / 2$. The stopping potentials for a photosensitive material using these two sources are found to be 1 V and 3 V , respectively. What is the work function of the material?

A
1 eV
B
1.25 eV
C
1.5 eV
D
2 eV
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