Archana Shukla Solutions for Chapter: Light, Exercise 7: EVALUATE

Write the differences between concave and convex lenses

An optician's eye chart is fixed $1.5 \mathrm{m}$ behind the eyes of a patient looking into the mirror placed $9 \mathrm{m}$ in front of him. Find the distance of the eye chart as seen by patient's eye.

Observe the given diagram and answer the following:

Complete the figure to show the path of the ray after it hits the surface of mirror AB.

Observe the given diagram and answer the following:

Find the angle of incidence at AB.

Observe the given diagram and answer the following:

The angle of reflection at BC is ____ $°$.

A girl with a face $5 \mathrm{cm}$ wide stands $2 \mathrm{m}$ from a plane mirror. Where is her image formed? How wide is the image of her face? If she walks towards mirror at $2 \mathrm{m}/\mathrm{s}$, at what speed does her image approach her?

Aditya fixed two plane mirrors at a dangerous T-junction in such a way that motorists approaching the junction could see all other traffic. How had he fixed the mirrors? Explain with the help of diagram.

Study the given figure. It shows a wall and two plane mirrors. Aman is standing behind the wall. From the mirrors, he is able to see Akshat. At which of the following positions is Akshat standing?