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प्रश्न
In the following cases, where must an object be placed in front of a convex lens so that the image formed is upright and enlarged?
उत्तर
Between optical center and focus.
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संबंधित प्रश्न
A beam of light travelling in air is incident of water. Draw a ray-diagram indicating the change in its path in water.
f the image formed by a convex lens is of the same size as that of the object, what is the position of the image with respect to the lens?
Describe the nature of image formed when an object is placed at a distance of 30 cm from a convex lens of focal length 15 cm.
The focal length of a thin convex lens is ______ than that of a thick convex lens.
Study the diagram given below.
- Name the lens LL’.
- What are the points O and O’ called?
- Complete the diagram to form the image of the object AB.
- State the three characteristics of the image.
- Name a device in which this action of lens is used.
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a) Which optical instrument shows arrangement of lenses as shown in the figure?
b) Write in brief the working of this optical instrument.
c) How can we get different magnifications in this optical instrument?
d) Draw the figure again and labelled it properly
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Which lens can produce a real and inverted image of an object?
Define the terms principal foci and focal lengths as applied to a convex lens, and show them with the help of proper diagrams.
Which of the following statements is true?
