Physics - Study Mode

[#156] In AC circuits, AC meters measure
Correct Answer

(B) Rms values

Explanation

Solution: An AC meter calibrated to accurately read RMS voltage or current on a pure sine wave will not give the proper value while indicating the magnitude of anything other than a perfect sine wave. This includes triangle waves, square waves, or any kind of distorted sine wave.

[#157] The motion of a freely falling body is an example of ________ accelerated motion.
Correct Answer

(B) Uniformly

Explanation

Solution: The motion of a freely falling body is an example of uniformly accelerated motion.

[#158] A body is initially moving with a velocity of 5 m/s. It undergoes an acceleration of 2 m/s 2 for 4 seconds. Find the displacement (in m) of this body in these 4 seconds.
Correct Answer

(C) 36

[#159] Formula for distance is
Correct Answer

(A) Speed x time

Explanation

Solution: Formula for distance is speed x time.

[#160] Which among the following is false about displacement?
Correct Answer

(D) It is always positive

Explanation

Solution: Displacement can be either positive or negative.