Chapter 21, Problem 21.9P

List the differences between the following paragraph; 1- Advantage & disadvantage fiber optics. 2- RAM&ROM 3- ADC&DAC 4- LED&LCD 5- AND gate & OR gate

2. A certain ruby laser emits 1J pulses of light whose wavelength is 694nm. What is the minimum Cr3* ions in the ruby? 1. In a laser unit laser beam of wavelength 6328Aº is emitted. How many photons are released per unit sec if the output power is 1mW

Explain the working of PV Cell with a neat sketch?

What determines the amount of current a solar cell can produce?

In which category does the solar cell belong?

Calculate the energy of a photon of electromagnetic radiation at the wavelengths: 0.052 nm (wavelength contained in medical X-rays)

1. The resistivity of aluminum is 2.8 x 10-8 Nm. How long (in meters) a piece of aluminum wire 1.0 mm diameter is needed to give a resistance of 4.0 0?

Explain the principle of work of an x-ray tube.

Calculate the percentage efficiency of a solar PV module whose length is 141 cm and width is 104 cm and produces 182 W maximum power when exposed to 1049 W/m? solar irradiance?