1. The wavelength of visible light are between
(a) 0.4 µm to 0.7 µm
(b) 3000µm to 0.4µm
(c) 0.7µm to 1000µm
(d) 0.1cm to 30 cm
2. The laws of reflection are for
(a)Concave mirror
(b)Convex mirror
(c)Plane mirror
(d)All reflecting surfaces
3. In vacuum the speed of light depends upon
(a)Wavelength
(b)Velocity of the source of light
(c)Frequency
(d)None of these
4. A plane mirror reflects a beam of light to form a real image. The incident beam is
(a) Divergent
(b) Convergent
(c) Parallel
(d) None of these
5. The amount of light reflected depends upon the
(a) Nature of the surface
(b) Smoothness of the surface
(c) Nature of material of object
(d) All of the above
6. The total internal reflection can occur when light pass from
(a) Denser to rarer medium
(b) Rarer to denser medium
(c) One medium to another of equal refractive index
(d) None of these
7. The refractive index of a given piece of transparent quartz is greatest for
(a) Violet light
(b) Yellow light
(c) Green light
(d) Blue light
8. A well cut diamond appears bright because of
(a) Dispersion
(b) Total internal reflection
(c) Its emit light
(d) Radioactive
9. When a ray or light enters a glass slab from air
(a) Its wavelength increase
(b) Its wavelength decrease
(c) Its frequency increase
(d) Both are increases
10. An object is placed between two parallel mirrors. The number of images formed is
(a) 6
(b) 8
(c) 9
(d) Infinity
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