1. The separation of sunlight into component colors by means of a prism is called (a)...

1. The separation of sunlight into component colors by means of a prism is called (a) diffraction, (b) dispersion, (c) refraction, (d) reflection.

2. Monochromatic light transmitted into a prism cannot be (a) refracted, (b) reflected by180⁰, (c) internally reflected, (d) dispersed.

3. Which of the following colors of light is refracted more in a typical transparent medium? (a) blue, (b) yellow, (c) green, (d) red.

4. Dispersion is responsible for (a) diffuse reflection, (b) spherical aberration, (c) chromatic aberration, (d) polarization.

5. The appearance of a “wet spot” on a hot highway in the summer is caused by (a) polarization, (b) reflection, (c) refraction, (d) aberration.

6.Light enters a more optically dense medium at (a) θ₁=θ₂, (b) θ₁ >θ_2, (c) θ₁<θ_{2 ,} (d) θ₁=θ_c .

Solutions

Expert Solution

1. The separation of sunlight into component colors by means of a prism is called dispersion, it is the observed because different colours or wavelengths travel with different speeds in a given media (say prism). hence we obtain a 7 coloured spectra of sunlight after passing it through prism.

2. Monochromatic light transmitted into a prism cannot be dispersed, it is so because phenonemnon of dispersion is based on the fact that different wavelengths travel with different speeds in a given media but in a monochromatic light there is only one wavelength and hence dispersion is not possible.

3. red colour is refracted more in a transparent medium because it has the greatest wavelength and hence suffers the minimum deviation.

4. Dispersion is responsible for chromatic aberration , because different colours travel with different speeds in a lens giving rise to chromatic abberation.

5. The appearance of a “wet spot” on a hot highway in the summer is caused by REFLECTION, it happens when highway gets hot , the refractive index of air near the rod is decreased and hence the rays of light coming from upper atmosphere suffers total internal reflection and we get to see a wet spot

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genius_generous answered 1 year ago

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