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ECAT - Practice Test - Physics - Optics Quiz

Attempt 10 MCQs on ECAT - Practice Test - Physics - Optics | Quiz 6

51. What is the power of a convex lens with focal length 20 cm?



52. An object at 30 cm from a concave mirror of f=15 cm. What is the image?



53. In Young's double slit (d=0.2 mm, D=1 m), third bright fringe is at 1.5 cm. Find wavelength.



54. A grating has 5000 lines/cm. What is the grating spacing d?



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