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प्रश्न
A student has to trace the path of a ray of light passing through a rectangular glass slab for four different values of angle of incidence.
(a) Write two important precautions for this experiment.
(b) List two conclusions the student will draw based on his experiment.
उत्तर
(a) Make sure the glass slab is
(i) Clean and free from air bubbles
(ii) The pin should be fixed in vertical postion and all pins should be placed in a straight line.
(iii) The glass slab should be perfectly rectangular with all its faces smooth
(b) The incident ray, refracted ray and normal all lie in the same plane.
(i) The incident ray and the refracted ray
(ii) are an opposite side of the normal.
(iii) `therefore sin i/sin r `= constant
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संबंधित प्रश्न
"A concave mirror of focal length 15 cm can form a magnified, erect as well as inverted image of an object placed in front of it." Justify this statement stating the position of the object with respect to the pole of the mirror in both the cases for obtaining the images.
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(i) Write the type of mirror.
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(iii) How far is the object located from the mirror?
(iv) Draw the ray diagram to show the image formation in this case.
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