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MHT CET Physics question

PhysicsExperimental SkillsMHT CET

In a metrebridge, when and X are the resistances in left gap and right gap respectively, the null point is obtained at 40 cm from the left. Now, when the resistance is in left gap and X in right gap, then the null point is obtained at 60 cm from the left. When the resistance in left gap is changed to , the null point will be at

Answer: (B)

Solution

and , so and

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Question ID VK-045199