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RELATED QUESTIONS
State two uses of a plane mirror.
If the angle between the plane mirror and the incident ray is 40∘, what are the angles of incidence and reflection?
Figure shows an incident ray AO and the normal ON on a plane mirror. The angle which the incident ray AO makes with mirror is 30°. (a) Find the angle of incidence. (b) Draw the reflected ray and then find the angle between the incident and reflected rays.
Draw a neat diagram of reflecting periscope.
Copy the figure. By taking two rays from point A, show the formation of image. State four characteristics of the image.
Light that hits a mirror gets ______.
State the direction of incident ray which after reflection from a spherical mirror retraces its path. Give reason for your answer.
A ray of light is travelling in a direction perpendicular to the boundary of a parallel glass slab. The ray of light ______.
A burning candle in water
Take a shoe box, open on one side. Place a small lighted candle in it. Place a clear glass sheet (roughly 25 cm × 25 cm) in front of this candle figure. Try to locate the image of the candle behind the glass sheet. Place a glass of water at its position. Ask your friends to look at the image of the candle through the sheet of glass. Ensure that candle is not visible to your friends. Your friends will be surprised to see the candle burning in water. Try to explain the reason.
