An(c, -- object smm high is placed 600 mm in front of a negative lens of focal length 4.1 25o min,...

Question

An(c, -- object smm high is placed 600 mm in front of a negative lens of focal length 4.1 25o min, Find (a) by calculation and (b) by graphical construction to scale, the posity,-,p-,. size, and attitude (erect or inverted) of the image. 13 A lamp and screen are 1 m apart and a +7 D lens is mounted between them. Where can the lens be placed to give a sharp image, and what will be the magnification? 4 14 How does the transverse magnification produced by a lens of focal length J depend on . h ea..; sr. t frevrri the. Ichirtel9 *1.— C XXXXXXXXXXA -

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David · Accepted Answer

Problem 4.36 
Answer 
As we know that  
f = 100/P   where f is focal length and P is power 
In case of afocal system 
d = f1 + f2  
d = 100/P1 + 100/P2  
d = 100/4 – 100/6  
d = 25 – 16.66 
d = 8.33 cm 
But if Second lens has +6D power then 
d = f1 + f2  
d = 100/P1 + 100/P2  
d = 100/4 +100/6 
d = 25 + 16.66 
d = 41.66cm 
Problem 4.28 
Answer 
Focal length of a thin lens can be calculated using an optical bench stands,

An(c, -- object smm high is placed 600 mm in front of a negative lens of focal length 4.1 25o min, Find (a) by calculation and (b) by graphical construction to scale, the posity,-,p-,. size, and...

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