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Hydrogen Line spectra – Bohr’s Model Approach According to the third postulate of Bohr’s Model, whenever an electron jumps from higher energy level (orbit) of a Hydrogen atom to one of its lower energy level, an electromagnetic wave (em wave) emits. The energy of em wave is equal to the energy difference between the two…
Assemble the Electrical Components – Activity to be done by Class 12 Physics Students Aim To assemble the components of a given electrical circuit. Apparatus and Material Required Resistor, ammeter, (0-1.5A) voltmeter (0-5V ), battery, one way key, rheostat, sand paper, connecting wires. Procedure Results The components of the electrical circuit were assembled. Precautions Discussion Draw…
Aim To determine resistivity of two wires by plotting a graph for potential difference versus current. Apparatus and Material Required Principle According to Ohm’s Law, the current passing through a conductor is directly proportional to the voltage applied across it, as long as the conductor’s temperature and other physical properties remain constant. If I be the…
Aim To measure diameter of a given wire and thickness of a given sheet using screw gauge. Apparatus and Material Required Principle A screw gauge works on the principle of a screw. When a screw is rotated in a nut, the linear distance moved by it is directly proportional to the number of rotations given to…
Identify a diode, an LED, a resistor and a capacitor Aim To identify a diode, an LED, a resistor and a capacitor from a mixed collection of such items. Apparatus and Material Required Multimeter, a collection of diode, LED, resistor and capacitor. Principle Procedure Results A diode, a LED, a resistor and a capacitor are identified…
