Two plane mirrors M _ 1 and M _ 2 are at right angle to each othe… - Vidyadip

MCQ

Two plane mirrors ${M}_{1}$ and ${M}_{2}$ are at right angle to each other shown. A point source $'P'$ is placed at $'a'$ and $'2a'$ meter away from ${M}_{1}$ and ${M}_{2}$ respectively. The longest distance between the images thus formed is : (Take $\sqrt{5}=2.3$ )

A
$3 {a}$
✓
$4.6 {a}$
C
$2.3 {a}$
D
$2 \sqrt{10} {a}$

✓

Answer

Correct option: B.

$4.6 {a}$

b
Shortest distance is $2 {a}$ between ${I}_{1} \& {I}_{3}$

But answer given is for ${I}_{1} \& {I}_{2}$

$\sqrt{(4 a)^{2}+(2 a)^{2}}$

$a \sqrt{20}$

$4.47 {a}$

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

JEE STD 11 Science question papers→Gujarat Board STD 11 Science question papers→Gujarat Board question paper generator→

Similar questions

On adjusting the $P-N $junction diode in forward biased

A rectangular conducting loop of sides $8\, cm$ and $2\, cm$ with a small cut is moving out a region of uniform magnetic field of magnitude $0.3\, T$ directed normal to the loop as shown in fig $(i)$ and $(ii)$. If the velocity of loop is $1\,cm\, s^{-1}$, then the ratio of voltage developed across ab in case $(i)$ to case $(ii)$ is......$V$

If the sodium light in Young’s double slit experiment is replaced by red light, the fringe width will

A soap bubble assumes a spherical surface. Which of the following statement is wrong

Figure shows electric field lines in which an electric dipole $p$ is placed as shown. Which of the following statements is correct?

The particles which can be added to the nucleus of an atom without changing its chemical properties are called

An initially uncharged capacitor $C$ is being charged by a battery of emf $E$ through a resistance $R$ upto the instant, when the capacitor is charged to the potential $E / 2$, then the ratio of the work done by the battery to the heat dissipated by the resistor is given by

A uniform magnetic field $B$ of $0.3\, T$ is along the positive $Z-$ direction . A rectangular loop $(abcd)$ of sides $10\, cm\times5\, cm$ carries a current $I$ of $12\, A$. Out of the following different orientations which one corresponds to stable equilibrium ?

A force $F$ is needed to break a copper wire having radius $R.$ The force needed to break a copper wire of radius $2R$ will be

A perfect gas contained in a cylinder is kept in vacuum. If the cylinder suddenly bursts, then the temperature of the gas