Question

Q1) Sunlight reflects from a concave piece of broken glass, converging to a point 11 cm from the glass. What is the radius of curvature of the glass?

Q2) A television is tuned to a station broadcasting at a frequency of 6.20×10⁷ Hz . For best reception, the rabbit-ear antenna used by the TV should be adjusted to have a tip-to-tip length equal to half a wavelength of the broadcast signal. Find the optimum length of the antenna.

Q3) A 110 μF capacitor is connected to an ac generator with an rms voltage of 23.0 V and a frequency of 150.0 Hz . What is the rms current in this circuit?

Q4) Light travels a distance of 0.925 m in 3.70 ns in a given substance. What is the index of refraction of this substance?

Answer 1