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प्रश्न
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?
उत्तर
The image will be formed at a distance of 2F from the lens and behind it.
संबंधित प्रश्न
Draw a labelled ray diagram to show the angle of incidence and the angle of refraction for a refracted ray of light.
Describe with the help of a ray-diagram, the formation of image of a finite object placed in front of convex lens between f and 2f. Give two characteristics of the image so formed.
A convex lens of focal length 6 cm is held 4 cm from a newspaper which has print 0.5 cm high. By calculation, determine the size and nature of the image produced.
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 is the focal length of this lens?
An object 50 cm tall is placed on the principal axis of a convex lens. Its 20 cm tall image is formed on the screen placed at a distance of 10 cm from the lens. Calculate the focal length of the lens.
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?
Answer the following question.
List four precautions which a student should observe while determining the focal length of a given convex lens by obtaining an image of a distant object on a screen.
State the nature and position of the object on the principal axis to obtain a virtual and magnified image.
_______ times larger images can be obtained by using a simple microscope.
Which of the following statements is true?
