Practice Sheets on Light Reflection & Refraction

Light reflection and refraction Worksheet-28

61. The value of refractive index ‘n’ for the given refraction is:

A. > 1                                               B. < 1

C. = 1                                               D. Data insufficient

Light reflection and refraction Worksheet-29

71. In an experiment, it was found that when an object is placed at a distance of 25 cm from the mirror it produces an inverted image of the same size as of the object. The focal length of this spherical mirror is

A. 25 cm            B. 1.25 cm         C. 0.125 m         D. 12.5 m 

72. To get an image larger than the object, one can use

A. Convex mirror but not a concave mirror

B. Concave mirror but not a convex mirror

C. Either a convex mirror or a concave mirror

D. Plane mirror

Light reflection and refraction Worksheet-30

81. The focal length of the concave mirror in the experimental set-up shown below is equal to

A. 12.2 cm         B. 11.4 cm                   C. 11.0 cm                   D. 9.8 cm

82. On regular reflection from the surface XY, the reflected ray will go along: