Physics · Ray Optics
The distance between an object and a screen is 100 cm. A convex lens can produce a real image of the object on the screen for two different positions between the screen and the object. The distance between these two positions is 40 cm. If the power of the lens is given as N100 D where N is an integer, what is the value of N?
- 1210
- 2400
- 3476✓
- 4524
Correct answer
476
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