An isosceles prism of angle has a refractive index of 1.44. Two parallel monochromatic rays enter the prism parallel to each other in air as shown. The rays emerging from the opposite faces
a) |
Are parallel to each other |
b) |
Are diverging |
c) |
Make an angle |
d) |
Make an angle |
An isosceles prism of angle has a refractive index of 1.44. Two parallel monochromatic rays enter the prism parallel to each other in air as shown. The rays emerging from the opposite faces
a) |
Are parallel to each other |
b) |
Are diverging |
c) |
Make an angle |
d) |
Make an angle |
A person suffering from ‘presbyopia’ (myopia and hyper metropia both defects) should use |
|
a) |
A concave lens |
b) |
A convex lens |
c) |
A bifocal lens whose lower portion is convex |
d) |
A bifocal lens whose upper portion is convex |
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