12th Standard Syllabus & Materials
12th Standard
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Published on: 18/06/2021
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Download Tamil Nadu 12th Standard Physics question papers, model tests, one-mark questions, important questions, and public exam papers in PDF format. Free study materials and answer keys for TN State Board students.
Questions + Answers key
Take MCQ Physics Test1.
Define interference of light.
2.
Write the expression for angular resolution.
3.
Define bandwidth.
4.
What is known as constructive interference?
5.
What is astigmatism? What is its remedy?
1.
The phenomenon of addition or superposition of two light waves which produces increase in intensity at some points and decrease in intensity at some other points is called interference of light.
2.
The angular resolution has a unit in radian (rad) and it is given by the equation,
\(\theta =\cfrac { 1.22\lambda }{ \alpha } \)
3.
The bandwidth (β) is defined as the distance between any two consecutive bright or dark fringes.
4.
(i) If the crest of one wave meets the crest of the other wave or the trough of one wave meets the trough of the other wave, the waves are in-phase.
(ii) At these point, the displacement is maximum and these points appear bright. This is known as constructive interference.
5.
Astigmatism:
Astigmatism is the defect arising due to different curvatures along different planes in the eye lens.
Remedy:
Use of Cylindrical, Bi-focal and progressive lenses.
12th Standard Syllabus & Materials
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Tamilnadu Stateboard 12th Standard Subjects
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Accountancy
History
Computer Applications
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