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A glass hemisphere of radius 0.04 m and  of the material 1.6 is placed centrally over a cross mark on a paper (i) with the flat face; (ii) with the curved face in contact with the paper. In each case the cross mark is viewed directly from above. The position of the images will be

a)

(i) 0.04  from the flat face; (ii) 0.025  from the flat face

b)

(i) At the same position of the cross mark; (ii) 0.025  below the flat face

c)

(i) 0.025  from the flat face; (ii) 0.04  from the flat face

d)

For both (i) and (ii) 0.025  from the highest point of the hemisphere


Question ID - 153047 | Toppr Answer

A glass hemisphere of radius 0.04 m and  of the material 1.6 is placed centrally over a cross mark on a paper (i) with the flat face; (ii) with the curved face in contact with the paper. In each case the cross mark is viewed directly from above. The position of the images will be

a)

(i) 0.04  from the flat face; (ii) 0.025  from the flat face

b)

(i) At the same position of the cross mark; (ii) 0.025  below the flat face

c)

(i) 0.025  from the flat face; (ii) 0.04  from the flat face

d)

For both (i) and (ii) 0.025  from the highest point of the hemisphere

1 Answer - 5876 Votes

3537

Answer Key : (b) -

(b)

Case (i) When flat face is in contact with paper

 where

 of medium in which light rays are going

 of medium from which light rays are coming

 distance of object from curved surface

 the image will be formed at the same position of cross

Case (ii) When curved face is in contact with paper



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