Questions
A uniform magnetic field of 0.3 T is established along the positive Z-direction. A rectangular loop in XY plane of sides 10 cm and 5 cm carries a current of as shown. The torque on the loop is :
detailed solution
Correct option is B
Magnetic moment M → due to the loop is downward and θ=1800 between M →& B → τ=M B sin 1800 =0Talk to our academic expert!
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The work functions of three metals A,B and C are WA, WB and WC respectively. They are in the decreasing order. The correct graph between stopping potential V0 and frequency V of incident radiation is
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