A transparent photographic slide is placed in front of a converginglens with a f

Question

A transparent photographic slide is placed in front of a converginglens with a focal length of 2.32 cm. Thelens forms an image of the slide 12.7 cmfrom the slide itself. (For each part, enter 'none' in the secondbox if there is only one answer.) How far is the lens from theslide if the image is the following? (a) real
nearer possible distance
1 cm
further possible distance
2 cm

(b) virtual
nearer possible distance
3 cm
further possible distance
4 cm (a) real
nearer possible distance
1 cm
further possible distance
2 cm

(b) virtual
nearer possible distance
3 cm
further possible distance
4 cm

Explanation / Answer

Given : Focal length ( f ) = 2.32 cm Image distance ( i ) = 12.7 Object distance ( p ) = --- We know that focal length   1/f = 1/i +1/p                                            1/p = 1/f - 1/u                                            p = ---- cm Solve it I hope it helps you

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