LIGHT : REFLECTION AND REFRACTION - II
PREPARED BY: P NAGESWARA RAO, M.SC., B.Ed.,
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Q1. What is the change in direction of light called when it passes from one medium to another?   *
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Q2. When light travels from air into glass, it:  
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Q3.  Assertion: Light bends towards the normal when it enters a denser medium.
Reason: Speed of light increases in a denser medium.  
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  Q4. Refractive index of a medium is given by the ratio:  
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  Q5. Which of the following is true about light entering a denser medium?  
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  Q6. The path of light bends towards the normal when it goes from:  
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Q7. A lens that is thicker at the center than at the edges is called a:  
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Q8. A concave lens always forms an image that is:

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Q9.  The principal focus of a convex lens is the point where: *
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10.  In a concave lens, the image formed is: *
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Q11. The focal length of a concave lens is always:  
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Q12. What type of image is formed by a convex lens when the object is at 2F?  
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Q13. Power of a lens is measured in:  
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Q14. A ray passing through the optical centre of a lens:  
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Q15. Power of a convex lens of focal length 50 cm is:  
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