Single lens f₁ = 55 mm radius of circle,ho Object distance s (mm) xf x1.5 8.25cm x2.010 mm 11cm 13.75cm x2.5 1375mm x3.0 45nm = 20 mm 2cm 82.5mm 165 mm 128.5mm 10 16.5cm 110mm 16.5cm calculated image distance p (mm), measured image p (mm) 2.85cm 115cm 54 cm 92.7mm CM 32-5-19.2 cm 4,25cm 82.5mm 8.25 70 4.7cm P= Sf anal s or borobianoo S-f height image h; (mm) 0.7cm Icm 0.7cm 0.5cm no = 2cm 20mm M hi/ho M -(p/s) (mm) (mm) -0.35cm -0.35cm 0.5cm 0.5cm 0.35cm 0,31 cm 0.25cm 0.28cm How does your measure values of the image distance p, compare to the calculated value? daug bas How does the two different methods to determine magnification compare? What significance does the negative sign give to a value for magnification?

An object is 23 cm in front of a diverging lens that has a focal length of -17 cm. How far in front of the lens should the object be placed so that the size of its image is reduced by a factor of 2.0? Number Jud. i Units

26

= 3. A 15 cm tall object sits 80 cm to the left of a converging lens with a focal length of fi 30 cm. There is a second converging lens with a focal length of f2 = 20 cm sitting 60 cm to the right of the first converging lens. dige de a. Where is the image from the first lens formed? (find di1) f₁ = 30 cm do = 80cm di = ? C. -14 1-do₂ 'वे di = [130 - 50 ] = 48 cm to the right of lens 1 = b. What is the object distance for the second lens? (find doz) f₂ =20 cm do=48 cm di = ? Where is the final image formed? (find diz) do d. What is the distance between the original object and the final image? What is the overall magnification for this two-lens system? f. What is the height of the final image? (find hi2) 2

Plot 2 linear graphs with slope

1. How far from the object should the lens be held?

2. A convex (converging) lens produces a real, inverted image of an object that is magnified 2.50 times when the object is 19.0 cm from the lens. What is the focal length of the lens? cm

A camera lens used for taking close-up photos has a focal length of 11.8 mm. The farthest it can be placed from the film is 41 mm.   What is the closest object that can be photographed in mm?  d0 =  | mm

20

Photographs at a scale of S are required to cover an area X - mi square. The camera has a focal length and focal plane dimensions of 9 * 9in . If endlap is 60% and sidelap 30\% how many photos will be required to cover the area for the data given below?   ▾ Part A   S = 1/6500 ; X = 8 f = 152.4mn   Express your answer as an integer.