Copy the figure and show the image formation with the help of rays. Write three characteristic of the image formed.

For driving a car what type of mirror would you prefer to see the traffic at your back and why? Explain why it is preferred over a plane mirror?

An erect image three times the size of the object is formed with a concave mirror of radius of curvature 36 cm. What is the position of the image?

Discuss the position and nature of the image formed by a concave mirror when the object is moved from infinity towards the pole of mirror.

Figure below shows an object AB placed on the principal

axis of a convex lens placed in air. F₁ and F₂ are the two foci of the lens. Copy the diagram. (i) Draw a ray of light starting from B and passing through O. Show the same ray after refraction by the lens. (ii) Draw another ray from B which passes through F₂ after refraction by the lens. (iii) Locate the final image formed. (iv) Is the image real or inverted?