When a light ray traveling in air meets the surface of a piece of glass, which o

Question

When a light ray traveling in air meets the surface of a piece of glass, which of the following occur at the interface ? a. the light is totally reflected b. some of the light is reflected back into the air. c. some light enters the glass and is refracted toward the normal. d. some light enters the glass and is refracted away from the normal... e. all of the light enters the glass. When you look into a pool of water, the depth looks less than it actually is because of a. interference b- diffraction c. specular reflection d. refraction e. polarization Why would a decrease in the amount of ozone in the atmosphere increase the likelihood of people getting sunburn? a global temperatures would rise, b more ultraviolet radiation would reach the ground, c. we would be exposed to more infrared radiation, d the premise is incorrect-ozone and sunburn are not related 17 In air a light source emits a wavelength of630 ran. Under water the wavelength of this light will be: a 630 nm b. less than 630 nm c. more than 630 nm d. unpredictable

Explanation / Answer

14. When light ray falls on glass surface some reflection and some refraction takes place. But at the interface only reflection will exist.

So option B is correct.

15. The depth looks less than it because of refraction. Refraction from from water to air bends away from the normal.

So option D is correct.

16. Because of reflection from ozone layer earth is safe from ultraviolet rays if decrease in ozone layer takes place it will result in more ultraviolet radiation reaching to the ground.

So option B is correct.

17. In air speed of light is more so so wavelength will be more in comparison to water so under water wavelength will be less than 630 nm.

So option B is correct.

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