Page No 171: - Chapter 10 - Light - Reflection & Refraction - Ncert Solutions class 10 - Science

You can Download the Page No 171: - Chapter 10 - Light - Reflection & Refraction - Ncert Solutions class 10 - Science with expert answers for all chapters. Perfect for Tamil & English Medium students to revise the syllabus and score more marks in board exams. Download and share it with your friends

Share this to Friend on WhatsApp

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 = 2f

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 = −3h (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.