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5. because the telescope has to be used for a longer refracting purpose and short lenses refract to longer distances.
8. if he has convex lens then he is long sighted and if concave then shortsighted.
16. monochromatoc rays contains a single light beam whearas the polychromatic is a combination of differant colours. Example of mono-green light ray., example of polychromatic is white light which is a combo of seven colours.
8. if he has convex lens then he is long sighted and if concave then shortsighted.
16. monochromatoc rays contains a single light beam whearas the polychromatic is a combination of differant colours. Example of mono-green light ray., example of polychromatic is white light which is a combo of seven colours.
Rachit722:
can u explain 5 ques again
also explain 8 ques
see lens are short then refraction is more and lens are longer then small refraction as the area of refraction increases with increase in size
thanks
do ques 8 again
if its not urgent then can u wait till tmrw coz then i can send u the pic of my phys book that would be more helpful
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