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12. An object is placed at a distance of 10 cm from a convex mirror of focal lengthis the obje15 cm. Find the position and nature of the image.13. The magnification produced by a plane mirror is +1. What does this mean?langth is placed at a distance of 20 cm in front​​

Answer»

Explanation:

Answer:-

Given that

u= -10 cm

f= 15 cm

We NEED to FIND v

We know the formula

1/f = 1/v + 1/u

Therefore, 1/v= 1/f – 1/u

Substituting the known values in the above equation we get,

1/v= 1/15 + 1/10

1/v = (2+3)/30 (LCM)

Hencev=5/30 = 6 cm

v= 6cm

Nature of the image: The image is formed behind the mirror and it is virtual and erect.

Answer:-

The magnification produced by a plane mirror is +1 means that the image formed is virtual, erect and of the same size as that of object.



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