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What are the main types of laser?
Types of lasers are as illustrated below:
a. Solid State lasers
b. Raman laser
c. Semiconductor lasers
d. Dye lasers
e. Gaseous lasers
f. Chemical lasers
g. Free electron laser
h. Nuclear pumped laser
i. Photonic crystal lasers
j. Fibre hosted lasers
k. Metal vapour lasers
What do you mean by dead time in GM counter? Draw a neat diagram at GM counter and explain its working. Mention some of its applications. Give basic principle of Geiger-Muller coun
A boy goes to market with a average speed of 29 km/h.He returns back half the way he went with a average speed of 40 km/h.Find average speed for whole journey.
a) Orbital movement of electrons b) On the source of orbital motion of electrons c) These are repelled in an external magnetic field i.e. have a tendency to g
What is the Directionality of LASER? Directionality: Laser emits light which is highly directional. Laser light is emitted like a relatively narrow beam in an exact direction.
Michelson-Morley experiment (A.A. Michelson, E.W. Morley; 1887) Probably the most popular null-experiment of all time, designed to check the presence of the proposed "lumenife
a pendulum is timed ,first for 20 swings and then for 50 swings ; time for 20 swings = 17.4 sec and time for 50 sec = 43.2. calculate the average time per swing/
what is absorber paper in a dry cell
(1) The first practical application for piezoelectric devices was sonar, first developed during worldwar1. Piezoelectric materials are as a source of ultrasonic waves. At sea, they
need help understanding how to program in octave
How to calculate change in entropy.
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