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TEXTBOOK SOLUTIONS

Real World Physics 2 Exercise 2.1 Q1 t = = = 1.27 s Q2 Incident ray, reflected ray, normal, angle of incidence, angle of reflection. Q5 Answer = 1 m (see diagram) Q6 t = = = = 4.2 years Q7 From the diagram (i) (ii) (iii) Q9 From the diagram, length = 0.9 m Exercise 3.1 Q1 u = 30 v = 50 f = ? ⇒ f = = 18.75 focal length = 18.75 cm Q2 u = 20 v = 30 Image virtual ⇒ – =

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