In an electric circuit, an inductor of inductance 0.5 H and resistance 50\(\Omega\) is connected to an alternating current source of frequency 60 Hz. Calculate the impedance of the circuit.
Which of the following statements correctly explains why a total solar eclipse would be seen by people on only a small portion of the earth's surface? The
Water waves have a wavelength of 3.6cm and speed of 18cms\(^{-1 }\) in deep water. If the waves enter shallow water with wavelength of 2.0cm, calculate the speed of the waves in the shallow water.
An a.c. generator can be converted to a d.c. electric motor by replacing the
A ray of light travels obliquely from a less dense medium to a denser medium. Which of the following statements is true about the light?
