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4 cards from this section. Quick, good the night before a test.
What is the angle of reflection equal to?
Think about the law of reflection.
State Fermat's principle in your own words.
Consider the significance of time.
According to Snell’s Law, what does equal to?
Remember the relationship between the angles.
True or False: Light bends towards the normal when it enters a denser medium.
Think about what happens to light speed.
A beam of light enters from air to glass at an angle of 45 degrees. If the index of refraction of glass is 1.5, calculate the angle of refraction.
Apply Snell’s Law carefully, remember to handle the sin function.
A concave mirror has a focal length of 20 cm. An object is placed 30 cm away from the mirror. Using the mirror equation, find the position of the image.
Don’t forget the sign convention based on object placement.
7 more questions in this section. Enroll free to practise them all.
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