Question

Write the experimented method in measure the distances of object and image using concave mirror. And write the table for observations.

 (OR) 

Write an experimental activity which gives the information about types of images and measuring the object distance and image distance.

Answer 1

Aim : 

Observing the types of images formed by a concave mirror and measuring the object distance and image distance. 

Material required : 

A candle, paper, concave mirror, V-stand, measuring tape or meter scale. 

Procedure:

1) Place the concave mirror on V-stand, a candle and meter scale as shown in figure. 

2) Keep the candle at different distances from the mirror (10 cm to 80 cm) along the axis and by moving the paper find the position where we get sharp image on paper.

3) Note down the observations in table -1

4) Since we know the focal point and centre of curvature, we can re-classify the above observations as shown in the table – 2.

5) Then note down the observations in table – 2