Question

Match the description of image in column I with optical system in column II.


Which of the following option has the correct combination considering column-I and column-II.

• A. $D\to T$
• B. $B\to T$
• C. $A\to R,S$
• D. $C\to P,T$

Answer 1

The correct option is B $B\to T$

For option $\left(a\right)$ :-
As we know that plane mirror always form virtual, erect and same size of image that of the object is placed in front of it.
Option $a$ is incorrect.

For option $\left(b\right)$ :-
Plane mirror always forms virtual image.
Option $b$ is correct.

For option $\left(c\right)$ :-
For concave mirror
$u=-15\text{cm},f=-10\text{cm}$
$\because \frac{1}{f}=\frac{1}{v}+\frac{1}{u}$
$\Rightarrow \frac{1}{v}=\frac{1}{f}-\frac{1}{u}$
$\Rightarrow \frac{1}{v}=\frac{1}{-10}+\frac{1}{15}$
$\Rightarrow \frac{1}{v}=\frac{-3+2}{30}\Rightarrow v=-30\text{cm}$
$\Rightarrow$ Image will be real and inverted.
Option $c$ is incorrect.

For option $\left(d\right)$ :-
Convex mirror always forms virtual erect and diminished image.
Plane mirror forms virtual, erect and same size image as the object is placed in front of it.
Option $d$ is incorrect