Question

9.Which of the following is not a right precaution in experiment to determine the refractive index of glass?
a.The two pins erected should NOT be straight.\n\n
b.The position of the glass slab should not be disturbed.
c.The slope should be taken carefully.\n
d.\nImages of the fisrt two pins should be in the straight line with the other two pins.\n\n

10.Which of these precautions must be ensured in an experiment to verify Snell\'s law?
a.the pins are in line\nbefore placing the glass block
b.the pins are mounted on the optical bench before placing the glass block
c.the pins are in line\nbefore removing the glass block
d.the pins are mounted on the optical bench before removing the glass block

Answer 1

9- C

10-A