#39; is half filled with oil of refractive index $n_{1}$ and the other half is filled with water of r. Tags and topics: JEE MAIN,JEE Advanced,JEE Mains,KCET,NCERT,NEET,Ray Optics and Optical Instruments,Refraction at Plane Surface, JEE Main Physics,Class 11 Physics,Class 12 Physics."> #39; is half filled with oil of refractive index $n_{1}$ and the other half is filled with water of r. Tags and topics: JEE MAIN,JEE Advanced,JEE Mains,KCET,NCERT,NEET,Ray Optics and Optical Instruments,Refraction at Plane Surface, JEE Main Physics,Class 11 Physics,Class 12 Physics."> #39; is half filled with oil of refractive index $n_{1}$ and the other half is filled with water of r. Tags and topics: JEE MAIN,JEE Advanced,JEE Mains,KCET,NCERT,NEET,Ray Optics and Optical Instruments,Refraction at Plane Surface, JEE Main Physics,Class 11 Physics,Class 12 Physics.">
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Question

A vessel of depth '$d$' is half filled with oil of refractive index $n_{1}$ and the other half is filled with water of refractive index $n_{2}$. The apparent depth of this vessel when viewed from above will be-

$\frac{2 d\left(n_{1}+n_{2}\right)}{n_{1} n_{2}}$
$\frac{d\left(n_{1}+n_{2}\right)}{2 n_{1} n_{2}}$
$\frac{d n_{1} n_{2}}{2\left(n_{1}+n_{2}\right)}$
$\frac{d n_{1} n_{2}}{\left(n_{1}+n_{2}\right)}$

Solution

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