Selina ICSE Solutions for Class 10 Physics Chapter 5 Refraction through Lens Exercise 5(A) Solution 1. A lens is a transparent refracting medium bounded by two curved surfaces which are generally spherical. Solution 2. Solution 3. Convex lens: It converge the incident rays towards the principal axis. It has a real focus. Concave lens: It diverges the incident rays away from the principal axis. It has a virtual focus. Solution 4. Equiconvex lens is converging. Solution 5. Concave lens will show the divergent action on a light beam. Solution 6. As shown in the figure the convex lens has two glass prisms and one glass block. One of the glass prisms is situated above the glass block and one below the block. Solution 7. As shown in the figure the concave lens has two glass prisms and one glass block. One of the glass prisms is situated above the glass block and one below the block. Solution 8. If a parallel beam of light is incident on a ...
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