Andhra Pradesh Board Solutions for Chapter: Refraction of Light at Curved Surfaces, Exercise 1: Improve your learning

Collect the information about lenses available in an optical shop. Find out how the focal length of a lens may be determined by the given power of the lens.

Figure shows ray AB that has passed through a divergent lens. Construct the path of the ray up to the lens if the position of its foci is known.

Figure shows a point light source and its image produced by a lens with an optical axis $N_1{N}_2$. Find the position of the lens and its foci using the ray diagram.

Find the focus by drawing a ray diagram using the position of source S and image S' given in figure.

Draw the ray diagram and explain the nature and position of the image when the object is at $2\mathrm{F}$.

Draw the ray diagram if the object is placed between F and optic centre and explain the nature and position of the image.

Find the refractive index of the glass which is a symmetrical convergent lens if its focal length is equal to the radius of curvature to its surface.

The distance between two point sources of light is $24 \mathrm{cm}$. Where should a convergent lens with a focal length of $f=9 \mathrm{cm}$ be placed between them to obtain the images of both sources at the same point?