1) state the law of refraction of light with two examples for refraction of light in daily life
2) a convex lens of focal length is 10 cm calculate its power?
Share
1) state the law of refraction of light with two examples for refraction of light in daily life
2) a convex lens of focal length is 10 cm calculate its power?
Sign Up to our social questions and Answers Engine to ask questions, answer people’s questions, and connect with other people.
Login to our social questions & Answers Engine to ask questions answer people’s questions & connect with other people.
1)
Laws of refraction of light
1) The incident ray , refracted ray and the normal to the interface of two media at the point of incidence , all lie in the same plane.
2) The ratio of the sine of angle of incidence to the sine of angle of refraction is a constant , for a given color of light and given pair of media.
Examples of refraction in daily life
1) Bending of light when entering in the glass filled with water.
2) rainbow formation
3) a stick held obliquely which is partially immersed in water appear bent at the surface of water.
2)
focal length of convex lens = 10 cm
power = 1 / focal length
(where focal length is in metres )
changing the unit of focal length
f of convex lens = 10 cm = 10 / 100 m = 0.1 m
so,
Power = 1 / 0.1
power = +10 D
Answer:
Explanation: