A convex lens has power P. It is cut into two halves along its principal axis. Further one piece (out of two halves) is cut into two halves perpendicular to the principal axis as shown in figure. Choose the incorrect option for the reported lens pieces

The image formed by an objective lens of a compound microscope is
Real and diminished
Real and enlarged
Virtual and enlarged
Virtual and diminished
If $r$ and $r^1$ denotes the angles inside the prism having angle of prism $50^{\circ}$ considering that during interval of time from $t=0$ to $t=t, r$ varies with time as $r=10^{\circ}+t^2$. During the time $r^1$ will vary with time as

$$ \text { If } \mathrm{AB} \text { is incident plane wave front then refracted wave front in }\left(\mathrm{n}_2>\mathrm{n}_1\right) $$




