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Updated 9th Standard Science Study Materials 2022-2023 Exams

9th Standard English Medium Science Subject Light Book Back 1 Mark Questions with Solution Part - I Question Bank Software Jun-14 , 2021

QB365 provides detailed and simple solution for every Book back Questions in class 9 Science Subject. It will helps to get more idea about question pattern in every book back questions with solution.

9th Standard English Medium Science Subject Light Book Back 1 Mark Questions with Solution Part - I

9th Standard English Medium Science Subject Light Book Back 5 Mark Questions with Solution Part - I

9th Standard

    Reg.No. :
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Science

Time : 00:30:00 Hrs
Total Marks : 5
    5 x 1 = 5

  1. The field of view is maximum for ________ 

    (a)

    plane mirror

    (b)

    concave mirror

    (c)

    convex mirror

  2. _________ is used as reflectors in torchlight.

    (a)

    concave mirror

    (b)

    convex mirror

    (c)

    plane mirror

    (d)

    None of these

  3. The focal length of a concave mirror is 5cm. Its radius of curvature is

    (a)

    5 cm

    (b)

    10 cm

    (c)

    2.5 cm

  4. The speed of light is maximum in

    (a)

    vacuum

    (b)

    glass

    (c)

    diamond

    (d)

    graphite

  5. Which of the following statements about total internal reflection is true?

    (a)

    angle of incidence should be greater than critical angle

    (b)

    light must travel from a medium of higher refractive index to a medium of lower refractive index

    (c)

    both (a) and (b)

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