TEST - 13 (X - REFRACTION OF LIGHT AT CURVED SURFACES)
EFFORTS NEVER FAIL
NAME : *
1. Which one of the following materials cannot be used to make a lens? *
1 point
2. Which of the following is true? *
1 point
3. The value of the focal length of the lens is equal to the value of the image distance whenthe rays are, *
1 point
4.The distance between focus and 'Optic centre' is *
1 point
5.The rays which passes away from the principle axis is *
1 point
6.The focal length of a lens has in water. *
1 point
7.On what factors does the focal length of a lens depends? *
1 point
8.The line that joins the center of curvature and the pole is called *
1 point
9.The ray that travels along the principal axis is *
1 point
10.The distance between the focal point and optic centre is called the *
1 point
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