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Answers to Chapter 23 problems

23.2.1   

23.3.1   

23.3.2   \( {dy \over dt} \)  = âˆ’\( v \over  { \left( {2x \over R} -1 \right) }^2 \);  

23.4.1   4.8°

23.4.2   1.33

23.4.3    \( \sqrt {2} \)  = 1.414

23.6.1

23.6.2 

23.6.3   5.0 D

23.6.4   (a)  0.195 m  and  0.390 m    (b)  0.065  and  −0.130 m

23.6.5   0.15 m   or   0.30 m

23.6.6   0.71 m, in front of the lens  (real image)

23.7.1 

23.7.2   0.376 m;     1.52 m

23.7.3   0.70 m

23.7.4   5.3 cm

23.7.5   180 mm;   â€“0.58 and –1.7  (minus indicates inverted image)

23.7.6    0.3 m;     + 10   (upright image)

23.8.1   0.018 m;   39%

23.8.2   1.62

23.8.3   For crown glass: 0.300 m;    For flint glass: –0.375 m

23.8.4   (a)  0.031º     (b)  2.15º

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