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46. An electron and proton enter a magnetic field with equal velocities. Which one of them experiences more force? (NTSE Punjab, Stage-I, 2016-17)
Electron
Proton
It cannot be predicted
Both experiences same force
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47. The magnetic field lines due to an ordinary bar magnet (NTSE Rajasthan, Stage-I, 2015-16)
Form closed curves
Cross one another near the poles
Are more numerous near the N-pole than near the S-pole
Do not exist inside the magnet
48. Right Hand Thumb Rule is used for (NTSE Chandigarh, Stage-I, 2016-17)
Direction of induced current
Direction of force acting on a current-carrying conductor inside the magnetic field
Direction of magnetic field due to current carrying conductor
Direction of force on a moving charge inside magnetic field
49. A positively charged particle projected towards west is deflected towards north by a magnetic field then the direction of magnetic field is (NTSE Chandigarh, Stage-I, 2016-17)
Towards South
Forwards East
Downward
Upward
50. The magnetic field inside a current carrying long straight solenoid is (NTSE Chandigarh, Stage-I, 2015-16)
Zero
Uniform
Non-uniform
Cannot say as the data is insufficient
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