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Free gk questions Online Test - MeritNotes
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No. of Questions :10
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1. Give the uses of a simple microscope?
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2. What are the two kinds of spherical mirror?
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3. What is focal point?
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4. What is refraction of light?
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5. What is spectrum?
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6. What is mirage?
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7. Define focal length of a lens?
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8. Define centre of curvature of a lens?
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9. What is twinkling of stars?
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10. What are the uses of periscope?
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