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प्रश्न
Draw a diagram to represent the second focus of a convex lens.
उत्तर
Convex lens representing second focus.
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संबंधित प्रश्न
Write one condition where it does not bend when entering a medium of different optical density.
Where should an object be placed in front of a convex lens so as to obtain its real, inverted and magnified image?
If the object is moved to a point only 3 cm away from the lens, what is the new position, height and nature of the 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?
Which type of lenses are:
thicker in the middle than at the edges?
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.
A convex lens forms an image of an object equal to the size of the object. Draw a diagram to illustrate it.
The focal length of a lens is positive. In this case, state the kind of lens.
Which lens can produce a real and inverted image of an object?
