Class XII Apparatus : A photo-transistor (OCP 71), a carbon resistor of 150 Ω, a cell, a milliammeter (0 to 50 mA range), an infrared lamp, a variable transformer (to vary supply voltage infrared lamp), a mercury thermometer, an insulating screen with a central hole and connecting wires
Your Name*
Your Email*
Mobile Number*
Whatsapp Number*
Country*
City*
Product Quantity*
Your Message
(4 Star Rating) Videos 
