MHT CET Physics question

PhysicsMoving Charges and MagnetismMHT CET

A solenoid of 1.5 m length and 4.0 cm diameter possesses 10 turn per cm. A current of 5 A is flowing through it. The magnetic induction at axis inside the solenoid is

Answer: (A)

Solution

per cm , so

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Question ID VK-078306