Practice Numerical Examples (5.8) - Refraction Through a Lens

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8 questions

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6 sample questions

Question 1.
What is the focal length of a convex lens if the image distance is 15 cm and the object distance is 10 cm?
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Use the lens formula.
Question 2.
What type of lens is known as a diverging lens?
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Think about how it behaves with light.
3Question 3.
What is the focal length of a convex lens producing an image at 25 cm when the object is at 50 cm?
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Consider the lens formula.
4Question 4.
True or False: A concave lens always creates real images.
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Remember the types of images produced by concave lenses.
Question 5.
A researcher places an object 20 cm in front of a convex lens with a focal length of 5 cm. Calculate the image location and characteristics.
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Use the lens formula to find the solution.
Question 6.
A student experiments with a concave lens and places an object at 12 cm. If the focal length is -8 cm, where will the image be formed?
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Remember the sign conventions for concave lenses.

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