Page 423 - Schaum's Outline of Theory and Problems of Applied Physics

408 LENSES [CHAP. 32

Answers to Supplementary Problems

32.1. Diverge

32.2. (a) No. (b) Yes, if the object is farther from the lens than the focal point.

32.3. (a) No. (b) Yes, if the object is between the lens and the focal point.
32.4. The lens should be moved farther away from the film.

32.5. 48 cm

32.6. (a) 300 cm (b) Converging
32.7. −5cm

32.8. +58 cm

32.9. 1.58

32.10. The image is 16.7 cm in front of the lens, 1.67 cm in diameter, virtual, and erect.

32.11. No image is formed.
32.12. The image is 66.7 cm behind the lens, 1.67 cm in diameter, real, and inverted.

32.13. The image is 50 cm behind the lens, 1 cm in diameter, real, and inverted.

32.14. The image is 33.3 cm behind the lens, 3.3 mm in diameter, real, and inverted.
32.15. 36 cm

32.16. −56 cm

32.17. 9m

32.18. 1.5; erect and virtual
32.19. (a) 6.67 cm (b)20 cm

32.20. 14 ft

32.21. +4cm

32.22. 585
32.23. (a)30 (b)15 ◦ (c) 6.54 cm