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प्रश्न
State two applications of a convex lens.
उत्तर
The two applications of a convex lens are:-
(i) It is used as an objective lens in a telescope, camera, slide projector, etc.
(ii) With its short focal length, it is also used as a magnifying glass.
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संबंधित प्रश्न
"A convex lens can form a magnified erect as well as magnified inverted image of an object placed in front of it." Draw ray diagram to justify this statement stating the position of the object with respect to the lens in each case.
A student did an experiment with a convex lens. He put an object at different distances 25 cm, 30 cm, 40 cm, 60 cm and 120 cm from the lens. In each case he measured the distance of the image from the lens. His results were 100 cm, 24 cm, 60 cm, 30 cm and 40 cm, respectively. Unfortunately his results are written in wrong order.
Which of the object distances gives the biggest image?
Which type of lenses are:
thicker in the middle than at the edges?
Distinguish between:
Concave lens and Convex lens
Where must a point source of light be placed in front of a convex lens so as to obtain a parallel beam of light?
Point out the difference between a convex lens and a concave lens.
We can burn a piece of paper by focussing the sun rays by using a particular type of lens. Name the type of lens used for the above purpose. Draw a ray diagram to support your answer.
Find the odd one out and give its explanation.
Distinguish between:
Concave lens and Convex Lens
