Concepts of Physics

IIT JEE Physics (1978-2018: 41 Years) Topic-wise Complete Solutions

Reflection from Curved Surface

Objective

To study the nature of image formed after reflection from a curved surface.

Material

A shiny spoon, candle and matchbox

Procedure

Place a lighted candle in front of a large, shiny spoon. For each side of the spoon, check the following.

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  1. Is the image formed erect or inverted?
  2. What is the size of the image compared to that of the candle (large/ smaller/ same-sized)?
  3. Change the distance between the spoon and the candle. Does the size of image change?
  4. As you bring the spoon close to the candle, does the image of the candle disappear at a certain distance?