Question

Consider an optical system placed in water $(\mu =4/3)$ PQRS is a hollow glass slab filled with air $(\mu =1)$ This slab is kept on the principle axis of a lens in such a way that surface PS makes an angle $\theta$ with the axis of the lens. $(0<\theta <{180}^{\circ })$, then

• A. for transmission of light takes place through slab ${\theta }_{min}=\frac{\pi }{2}$$-$sin${}^{-1}\left(0.75\right)$
• B. for transmission of light through slab ${\theta }_{max}=\frac{\pi }{2}+$ sin ${}^{-1}\left(0.75\right)$
• C. for $x=100$ cm final image is at 3m distance from O
• D. for $x=50$ cm final image is at 3m distance from O

Answer 1

Answer: (A), (B)

$if\theta <{90}^{\circ }$ and If there is no TIR.