A ray of light through B 3-2 is reflected at the point A 0- - on the y-axis and passes through C 4-3- Then -A- 7-13B- 13-7C- 17-7D- 8-11

The correct option is C 17/7Image of B.w.r.t y axis is ( 3, 2) B^1 Eq of B^1 C is y 3 =1/7(x 4) β 3=1/7( 4)⇒β=3 4/7=21 4/7=17/7 ...

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Standard XII

Physics

YDSE Problems II

A ray of ligh...

Question

A ray of light through B(3, 2) is reflected at the point $A (0, β)$ on the y-axis and passes through C(4, 3). Then $β$ =

\frac{7}{11}

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\frac{13}{7}

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\frac{17}{7}

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\frac{8}{11}

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Solution

The correct option is C $\frac{17}{7}$
Image of B.w.r.t y - axis is (-3, 2) $B^{1}$
Eq of $B^{1} C$ is y - 3 $= \frac{1}{7} (x - 4)$
$β - 3 = \frac{1}{7} (- 4) \Rightarrow β = 3 - \frac{4}{7} = \frac{21 - 4}{7} = \frac{17}{7}$

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A ray of light through B(3, 2) is reflected at the point A(0,β) on the y-axis and passes through C(4, 3). Then β =

The correct option is C 177Image of B.w.r.t y - axis is (-3, 2) B1 Eq of B1C is y - 3 =17(x−4) β−3=17(−4)⇒β=3−47=21−47=177

A ray of light through B(3, 2) is reflected at the point $A (0, β)$ on the y-axis and passes through C(4, 3). Then $β$ =

The correct option is C $\frac{17}{7}$
Image of B.w.r.t y - axis is (-3, 2) $B^{1}$
Eq of $B^{1} C$ is y - 3 $= \frac{1}{7} (x - 4)$
$β - 3 = \frac{1}{7} (- 4) \Rightarrow β = 3 - \frac{4}{7} = \frac{21 - 4}{7} = \frac{17}{7}$