9th Standard English Medium Science Subject Light Book Back 2 Mark Questions with Solution Part - I

9th Standard

    Reg.No. :
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Science

Time : 00:30:00 Hrs
Total Marks : 10
    5 x 2 = 10
  1. According to cartesion sign convention, which mirror and which lens has negative focal length?

  2. Name the mirror(s) that can give (i) an erect and enlarged image, (ii) same sized, inverted image

  3. If an object is placed at the focus of a concave mirror, where is the image formed?

  4. Why does a ray of light bend when it travels from one medium to another?

  5. Concave mirrors are used by dentists to examine teeth. Why?

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