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11th Standard English Medium Physics Subject Nature of Physical World and Measurement Book Back 2 Mark Questions with Solution Part - I

11th Standard

    Reg.No. :
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Physics

Time : 00:30:00 Hrs
Total Marks : 10

    Part I

    5 x 2 = 10
  1. The radius of the circle is 3.12 m. Calculate the area of the circle with regard to significant figures.

  2. The measurement value of length of a simple pendulum is 20cm known with 2mm accuracy. The time for 50 oscillations was measured to be 40 s within is resolution. Calculate the percentage accuracy in the determination of acceleration due to gravity 'g' from the above measurement.

  3. Show that a screw gauge of pitch 1mm and 100 divisions is more precise than a vernier caliper with 20 divisions on the sliding scale.

  4. Having all units in atomic standards is more useful. Explain.

  5. From a point on the ground, the top of a tree is seen to have an angle of elevation 60o . The distance between the tree and a point is 50m. calculate the height of the tree?

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