NTPC CBT-2 Physics Quiz - 26

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Question 1:

Which one of the following laws of electromagnetism does not give the direction of the magnetic field?

Question 2:

Which of the following is the CGS unit of force? 

Question 3:

Lightning conductor works on the principle of

Question 4:

Astronauts cannot stand upright in a vacuum because-

Question 5:

If the power of an object is expressed in terms of Dioptre, then the object must be a/an _____.