Exploring Reflection and Refraction

Which of the following best describes the law of reflection?

• The angle of incidence is always greater than the angle of reflection.

• The angle of incidence is equal to the angle of reflection.

• The angle of incidence is always less than the angle of reflection.

• The angle of incidence and angle of reflection are unrelated.

Which of the following is necessary for total internal reflection to occur?

• Light must travel from a rarer to a denser medium.

• The angle of incidence must be less than the critical angle.

• Light must travel from a denser to a rarer medium.

• The angle of refraction must be zero.

• It increases

• It decreases

• It remains the same

• It becomes zero

Which of the following is an application of total internal reflection?

• Formation of rainbows

• Working of optical fibers

• Formation of shadows

• Dispersion of light through a prism

Which of the following best explains why a pencil appears bent when placed in a glass of water?

• Reflection of light

• Diffraction of light

• Refraction of light

• Scattering of light

• It will be partially reflected and partially refracted.

• It will be completely refracted.

• It will be totally internally reflected.

• It will be absorbed.

Which of the following devices uses the law of reflection?

• Periscope

• Microscope

• Telescope

• All of the above

• Refraction

• Diffraction

• Total internal reflection

• Dispersion