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Free and Forced Oscillations Questions and Answers PDF Download eBook
MCQ: Natural frequency of a guitar string can be changed by changing it's
- area
- diameter
- length
- stiffness
C
MCQ: Magnetic field can be produced by using
- permanent magnet
- electric current
- temporary magnet
- both A and B
D
MCQ: If a current of 1 A passes through a point in 1 s then charge passes that point is
- 2 C
- 3 C
- 1 C
- 6 C
C
MCQ: Energy is lost in wires due to
- heating
- resistance
- conduction
- both A and B
D
MCQ: When light enters from vacuum in to glass, its velocity
- decreases
- remains same
- increases
- varies depending on mass of glass
A