Practice Ray Optics And Optical Instruments (9) - RAY OPTICS AND OPTICAL INSTRUMENTS

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9 questions

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4 cards from this section. Quick, good the night before a test.
Exercise
6 questions · about 4 min · pass mark 70%. Hints available.
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3 questions · about 2 min · pass mark 70%. Hints available.
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6 sample questions

Question 1.
What is the law of reflection?
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Think about how you see yourself in a mirror.
Question 2.
Define refraction.
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Consider how a straw looks in a glass of water.
3Question 3.
What does Snell's Law describe?
- Reflection
- Refraction
- Transmission
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Remember: it’s about changes in direction.
4Question 4.
True or False: A real image can be projected on a screen.
- True
- False
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Reflect on how mirrors and lenses behave.
Question 5.
A concave mirror has a focal length of 15 cm. An object is located 10 cm in front of the mirror. Calculate the position and characteristics of the image.
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Remember to use the mirror equation correctly.
Question 6.
In a telescope, a star is seen through an eyepiece of focal length 2 cm and an objective lens of focal length 40 cm. Calculate the total magnification.
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Use the formula for magnification of telescopes.

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