**Updated By SaraNextGen**

**On January 25, 2024, 11:35 AM**

**Page No 171: - Chapter 10 Light Reflection & Refraction class 10 ncert solutions Science - SaraNextGen [2024] **

**Question** 1:

Find the focal length of a convex mirror whose radius of curvature is 32 cm.

**Answer**:

Radius of curvature, *R* = 32 cm

Radius of curvature = 2 × Focal length (*f*)

*R* = 2*f*

Hence, the focal length of the given convex mirror is 16 cm.

**Question** 2:

A concave mirror produces three times magnified (enlarged) real image of object placed at 10 cm in front of it. Where is the image located?

**Answer**:

Magnification produced by a spherical mirror is given by the relation,

Let the height of the object, *h*_{o} = *h*

Then, height of the image, *h*_{I} = −3*h* (Image formed is real)

Object distance, *u* = −10 cm

*v* = 3 × (−10) = −30 cm

Here, the negative sign indicates that an inverted image is formed at a distance of 30 cm in front of the given concave mirror.

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