Laser QUESTIONS AND ANSWERS

TNPSC : Laser QUESTIONS AND ANSWERS :: 2024 :: part1 : 1 to 5

Following TNPSC multiple choice objective type questions and answers will help you in many types of 2024 job and other entrance examinations :

1.The number of TV channels that can be accommodated using laser is

1 : 8 million

2 : 40 million

3 : 80 million

4 : 4 million

2.The light from a laser source is monochromatic because all the photons

1 : are in phase

2 : have same energy

3 : have same amplitude

4 : are in the same direction

3.In normal population, the number of atoms in the

1 : excited state is more

2 : ground state is more

3 : excited state is equal to the ground state

4 : ground state is zero

4.In Ruby laser the atoms are excited by

1 : ruby rod

2 : flash tube

3 : silvered mirror

4 : semi-transparent mirror

5.In a ruby laser, a large number of atoms occupy

1 : ground state

2 : excited state

3 : metastable state

4 : normal state

More Laser QUESTIONS AND ANSWERS available in next pages

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