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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? - CBSE Class 10 - Science

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Question

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?

Solution

The object distance of 25 gives the biggest image because at this position, the object is between f and 2f . We know that when an object is placed between f and 2f of a convex lens, we get a real, inverted and magnified image.

  Is there an error in this question or solution?

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Solution 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? Concept: Refraction of Light - Image Formation by Lenses - Convex Lens.
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