Understanding Refraction, Lenses, and Optical Phenomena in Physics
This chapter delves into the principles of refraction, exploring how light changes velocity and wavelength as it passes through different mediums such as air, water, and diamond. It includes various examples demonstrating the calculation of angles of refraction, critical angles, and magnification using convex and concave lenses. Key optical phenomena like mirages, rainbows, and why the sky appears blue or reddish-orange during different times of the day are also covered. This comprehensive study equips readers with essential concepts in optics.
Understanding Refraction, Lenses, and Optical Phenomena in Physics
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Presentation Transcript
CP Physics Chapter 15 Refraction and Lenses
Refraction of Light • Change of velocity • Change of wavelength
Example #3 How fast does light travel through diamond?
Example #4 What is the angle of refraction of a light ray entering water from air at an angle of 30 degrees?
Example #5 At what angle does the light ray exit into the flint glass? 38° water ethanol flint glass
Example #6 How far are you (1.8 m tall) standing from the edge of a pool, if you see a fish under water? The fish is actually 0.9 m deep and 0.5 m from the edge of the pool. Assume that the pool is completely filled. B. What is the apparent depth of the fish?
Example #7 What is the refracted angle of a light ray going from diamond at 37-deg into air?
Example #8 What is the critical angle of a ray going from diamond into air?
Why is the sky blue during midday and reddish/orange at sunset or sunrise?
Spherical Aberration Fig 36-34, p.1152
Chromatic Aberration Fig 36-35, p.1153
Example #6 What is the focal length of a convex lens if an image is located 4.5 cm in back of the lens and the object is placed at the same location but in front of the lens? what is the magnification of the lens?
Example #7 A magnifying glass is used to magnify the image of an insect that is placed 3 cm in front of the lens with a radius of curvature of 10 cm. Where is the image located?
Example #8 Where is the image located if an object is placed 5 cm in front of a 6 cm concave lens? What is the magnification of the lens? If the image is 1.1 cm tall, what is the size of the object?
Example #9 The magnification of a particular lens is to magnify an object by +3.5 times its original size. If the object is placed 4 cm in front of the lens, where is the image located and the focal length of the lens?
Example #10 A lens is used to magnify an image by 0.4 times. If the image is RSU and the focal length is 5 cm, A) where must the image and object be placed? B) How far apart are the image and object?
Vision • 20/80 vision • Diopter/lens power • eyeball
