(i) Speed. (ii) Accuracy. (iii) Safety. (iv) Secrecy. (v) Cost. (vi) Distance. (vii) Volume. (viii) Convenience. (ix) Record.
(i) Brevity: Avoid wordiness use words with the economy. Be brief. (ii) Standardized: Routine business letters are stereotyped and follow…
Advantages of a P-N junction over thermionic valve: i. It is smaller in size ii. It does not require a…
(i) Wave nature (a) Electron diffraction/light diffraction (b) Light refraction or reflection Particle nature (a) Photoelectric effect (b) Compton Scattering…
Applications of electromagnets 1. To produce an intense magnetic field in generators and electric motors 2. Used for lifting and…
The relationship between the angle of rotation of a mirror and the angle of deflection of a reflected ray when…
Action of the Rear reflector on a Bicycle. The rear reflector of a bicycle is made up of red coloured…
Application of total internal reflection: i. Fibre optics ii. Totally reflecting Prisms iii. Prism image inverter or used in projection…
Use of Bimetallic Strip: i. Electric fire alarm ii. Gas oven thermostat iii. Electric iron thermostat iv. Balance wheel of…
A ship made of steel floats on water because the overall density of the structure, that is the mass divided…