Physics-
General
Easy
Question
The figure shows the cross-section of a long cylindrical conductor of radius 
carrying a uniformly distributed current 
The magnetic field due to current at 
is
The correct answer is:
The current enclosed with in the circle
Ampere’s law 
gives
or 
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The force on the charge is
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If 
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What is the SI unit of permeability
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3-methyl-2-butanol on treatment with 
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are
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physics-General
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The block of mass M moving on the frictionless horizontal surface collides with the spring of spring constant k and compresses it by length L. The maximum momentum of the block after collision is
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A vertical frictionless semicircular track of radius R is fixed on the edge ofmovable trolley. Initially the system is at rest and a mass m is kept at the top of the track. The trolley starts moving to the right with a uniform horizontal acceleration 
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A vertical frictionless semicircular track of radius R is fixed on the edge ofmovable trolley. Initially the system is at rest and a mass m is kept at the top of the track. The trolley starts moving to the right with a uniform horizontal acceleration . The mass slides down the track, eventually losing contact with it and dropping to the floor h below the trolley The height at which mass m losing contact is
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physics-General
chemistry-
The final product (IV) in the sequence of reactions
is
The final product (IV) in the sequence of reactions
is
chemistry-General
