QJEEM25Ph5516: JEE Main 2025 Physics - Class 12 JEEM25Ph5516 Solution: Two light beams fall on a transparent material block at point 1 …

Two light beams fall on a transparent material block at point 1 and 2 with angle $\theta_1$ and $\theta_2$ , respectively, as shown in figure. After refraction, the beams intersect at point 3 which is exactly on the interface at other end of the block. Given : the distance between 1 and 2, $\mathrm{d}=4 \sqrt{3} \mathrm{~cm}$ and $\theta_1=\theta_2=\cos ^{-1}\left(\frac{n_2}{2 n_1}\right)$ . where refractive index of the block n_2> refractive index of the outside medium $\mathrm{n}_1$ , then the thickness of the block is ______ cm .