Question

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Answer 1

$\huge{\mathfrak{\red{\underline{Answer :-}}}}$

Image Distance from mirror(v) = 5cm

Given :-

Focal length (f) = 15 cm

Distance of object from the convex mirror (u) = 10 cm

To Find :-

Image distance (v) = ?

Solution :-

We know that,

$\huge{\red{\boxed{\boxed{\bf{\frac{1}{v} - \frac{1}{u} = \frac{1}{f}}}}}}$

____________[Put Values]

1/v - 1/10 = 1/15

1/v = 1/5 + 1/10

1/v = 2 + 3 / 30

1/v = 5/30

1/v = 1/6

v = 6 cm

$\large{\blue{\underline{\boxed{\bf{Image \: distance(v) \: = \: 6 cm}}}}}$

Answer 2

Answer:

Mirror Formula = 1/v + 1/u = 1/f

Where, v is the image distance, u is the object distance and f is the focal length.

According to the question,

• u = -10 cm
• f = 15cm
• v = ?

Substituting the given values in the mirror formula we get,

⇒ 1/v - 1/10 = 1/15

⇒ 1/v = 1/15 + 1/10

⇒ 1/v = 2/30 + 3/30

⇒ 1/v = 5/30

⇒ 1/v = 1/6

⇒ v = 6 cm

Therefore the image distance is 6 cm.

Hope it helped !!