Question

1.Which of the following is required in an experiment to determine the focal length of a mirror?
a.Optical bench
b.Mounted pins.
c.All of the above
d.Concave mirror with holder

2.Which of the following experiments can be suitably used to practically verify the laws of refraction?
a.None of the above
b.Refraction through the glass block experiment
c.Refraction experiment by plano-convex lens
d.Refraction experiment by triangular glass prism

Answer 1

1. a, d
2. b