Which is the strongest part(s) of a magnet ?By on 0A. North pole B. South pole C. North and south pole D. Median of north and south pole
Loudspeaker changes _________ energy into sound energy.By on 0A. Chemical B. Electrical C. Light D. Kinetic
Which of the following Rays are more Penetrating?By on 0A. Beta rays B. Alpha rays C. Gamma rays D. X-rays