Q143 / 160 · TS EAMCET 2018 (05 May Shift 2) · Physics
Two objects $P$ and $Q$ are placed at $10 \mathrm{~cm}$ and $30 \mathrm{~cm}$ infront of a convex lens of focal length $20 \mathrm{~cm}$. The correct option for the image of $P$ and $Q$ is
- A$\quad P$ virtual and inverted real and upright
- Correct answerB$\quad P$ virtual and upright real and inverted
- C$P$ real and inverted $Q$ virtual and upright
- D$\quad P$ real and upright $Q$ virtual and inverted
Solution
Focal length of convex lens $=20 \mathrm{~cm}$
Here, object $P$ is at $10 \mathrm{~cm}$
and object $Q$ is at $30 \mathrm{~cm}$.
As object $P$ is between focus and pole, it's image is virtual and erect.
Object $Q$ is beyond focus, so it's image is real and inverted.
Hence, the correct answer is option: 'B'.