7th Standard English Medium Science Subject T3 - Light Book Back 3 Mark Questions with Solution Part - II

7th Standard

    Reg.No. :
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Science

Time : 00:30:00 Hrs
Total Marks : 15
    5 x 3 = 15
  1. Draw a diagram of a pin hole camera showing the rays of light passing between the Object and its image.

  2. Two plane mirrors M1 and M2 are placed perpendicular with each other, as shown in figure. The ray AB makes an angle 39 ° with the plane mirror M1, then

    1. The reflected rays are ________,_______
    2. The incident rays are ______, ________
    3. What is the angle of incident corresponding to the ray BC?
    4. What is the angle of reflection corresponding to the ray CD

  3. What is reflection of light?

  4. What do you mean by lateral inversion?

  5. Why do we see white color in Newton’s disc, when we rotate it very fast?

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