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प्रश्न
Describe with the help of a ray diagram the nature, size and position of the image formed when an object is placed in front of a convex lens between focus and optical centre. State three characteristics of the image formed.
उत्तर
Image formation diagram:
Characteristics of the image so formed:
1) On the same side as that of the object or behind the lens
2) Nature of image – virtual and erect
3) Size of Image – enlarged
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संबंधित प्रश्न
The diagram given alongside shows a ray of light entering a rectangular block of glass.
(a) Copy the diagram and draw the normal at the point of entry.
(b) Draw the approximate path of the ray of light through the glass block and out of the other side.
Where should an object be placed in front of a convex lens so as to obtain its real, inverted and magnified image?
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.
What would be the image distance if the object distance was 90 cm?
An image formed on a screen is three times the size of the object. The object and screen are 80 cm apart when the image is sharply focussed.
State which type of lens is used.
The given below figure shows an object OA and its image IB formed by a lens
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draw suitable rays to locate the lens and its focus.
When you focus the image of a distant flag, whose shape is given below, on a screen using a convex lens, the shape of the image as it appears on the screen is
(A)
(B)
(C)
(D)
State the nature and position of the object on the principal axis to obtain a real image of the same size
Why do we say that the ‘2F’ and ‘F’ points of a convex lens can be regarded as a sort of ‘turning points’ as far as the nature of the image formed by it is concerned?
Write the name.
The lens used in simple microscope.
- In which type of microscope do you find the lens arrangement as shown in the following diagram?
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