You visited us 1 times! Enjoying our articles? Unlock Full Access!

Byju's Answer

Standard XII

Physics

Size of Mirror

L1 and L2 a...

Question

$L_{1}$ and $L_{2}$ are two lines. If the reflection of $L_{1}$ on $L_{2}$ and the reflection of $L_{2}$ on $L_{1}$ coincide, then the angle between the line is

30^{o}

No worries! We‘ve got your back. Try BYJU‘S free classes today!

60^{o}

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

45^{o}

No worries! We‘ve got your back. Try BYJU‘S free classes today!

90^{o}

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is D $60^{o}$
let the angle between $L_{1}$ and $L_{2}$ be $x$
reflection of $L_{1}$ makes and angle of $x$ with $L_{2}$
same happens in the case of $L_{2}$
since Reflections of $L_{1}$ and $L_{2}$ are same
the total angle becomes $3 x$ which is equal to $180$
$⟹ x = 60$

Suggest Corrections

Similar questions

Q. Let

L_{1}

and

L_{2}

are two intersecting lines.
If the image of

L_{1}

w.r.t.

L_{2}

and

L_{2}

w.r.t.

L_{1}

coincide, then angle between

L_{1}

and

L_{2}

is-

Q. Let

L_{1}

and

L_{2}

be two intersecting lines. lf the image of

L_{1}

w.r.t.

L_{2}

and that of

L_{2}

w.r.t.

L_{1}

concides, then the angle between

L_{1}

and

L_{2}

If $L_{1}$ and $L_{2}$ be the angle bisectors of two lines, then the angle between $L_{1}$ and $L_{2}$ is $90^{\circ}$ .

Q. If line

l_{1} ⊥ l_{2}

and

l_{2} ⊥ l_{3}

then what is relationship between

l_{1}

and

l_{3}

Q. Consider the following statements relating to

3

lines

L_{1}, L_{2}

and

L_{3}

in the same plane

1.

L_{2}

and

L_{3}

are both parallel to

L_{1}

, then they are parallel to each other

2.

L_{2}

and

L_{3}

are both perpendicular to

L_{1}

, then they are parallel to each other

3.

If the acute angle between

L_{1}

and

L_{2}

is equal to the acute angle between

L_{1}

and

L_{3}

then

L_{2}

is parallel to

L_{3}

.
Of these statements which one is correct?

Join BYJU'S Learning Program

L1 and L2 are two lines. If the reflection of L1 on L2 and the reflection of L2 on L1 coincide, then the angle between the line is

The correct option is D 60olet the angle between L1 and L2 be xreflection of L1 makes and angle of x with L2 same happens in the case of L2 since Reflections of L1 and L2 are same the total angle becomes 3x which is equal to 180⟹x=60

$L_{1}$ and $L_{2}$ are two lines. If the reflection of $L_{1}$ on $L_{2}$ and the reflection of $L_{2}$ on $L_{1}$ coincide, then the angle between the line is

The correct option is D $60^{o}$
let the angle between $L_{1}$ and $L_{2}$ be $x$
reflection of $L_{1}$ makes and angle of $x$ with $L_{2}$
same happens in the case of $L_{2}$
since Reflections of $L_{1}$ and $L_{2}$ are same
the total angle becomes $3 x$ which is equal to $180$
$⟹ x = 60$