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Question 1 of 9
1. Question
1 point(s)The power of a lens is labelled as -5D. Which of the following statements is correct about the lens?
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Question 2 of 9
2. Question
1 point(s)An object is placed 50 cm away from a convex lens. An image is formed 50 cm away on the opposite side of the lens. The focal length of the lens is
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Question 3 of 9
3. Question
1 point(s)An object is placed 30 cm away from a concave lens. An image is formed 20 cm away on the opposite side of the lens. The focal length of the lens is
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Question 4 of 9
4. Question
1 point(s)An object is 6 cm high and 30 cm from a convex lens. Its image is 90 cm from the lens. What is the height of the image formed?
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Question 5 of 9
5. Question
1 point(s)A lens form an image as the result of the
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Question 6 of 9
6. Question
1 point(s)
In the figure above, there are 3 light rays P, Q and R passing through a concave lens. Which of the light path is incorrect?CorrectIncorrect -
Question 7 of 9
7. Question
1 point(s)The focal length of a convex lens is 15cm. What is the characteristic of the image formed if an object is placed 10cm from the lens?
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Question 8 of 9
8. Question
1 point(s)The focal length of a convex lens is 15cm. What is the characteristic of the image formed if an object is placed 30cm from the mirror?
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Question 9 of 9
9. Question
1 point(s)The characteristics of the image produced by a concave lens are
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