11th Standard Syllabus & Materials
11th Standard
TN 11th Tamil இயற்கை வேளாண்மை,சுற்றுச்சூழல் -செய்யுள் - மனோன்மணீயம் Important Questions And Answers Study Material - QB365 Set A
NEW11th Standard
TN 11th Tamil என்னுயிர் என்பேன் -துணைப்பாடம் - இசைத்தமிழர் இருவர் Important Questions And Answers Study Material - QB365 Set A
NEW11th Standard
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NEW11th Standard
TN 11th Tamil பீடு பெற நில் - இலக்கணம் - பகுபத உறுப்புகள் Important Questions And Answers Study Material - QB365 Set A
NEW11th Standard
TN 11th Tamil பீடு பெற நில் - துணைப்பாடம் - வாடிவாசல் Important Questions And Answers Study Material - QB365 Set A
NEW11th Standard
TN 11th Tamil பீடு பெற நில் - செய்யுள் - குறுந்தொகை Important Questions And Answers Study Material - QB365 Set A
Published on: 13/05/2022
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Questions + Answers key
Take MCQ Physics Test1.
A wire of length L and cross section A is made of material of youngs modulus y. It is stretched by an amount x. What is the work done?
2.
For a given material, the youngs modulus is 2 - 4 times that of rigidity modulus. What is its poisson's ratio?
3.
The poisson ratio of a material is 0.5 if a force is applied to a wire of this material, there is a decrease in the cross sectional area by 4% what is the percentage increases in the length.
4.
Name the three types of thermal expansion.
5.
Why does the velocity increase when liquid flowing in a wider tube enters a narrow tube?
1.
\(\Delta l=x ; y =\frac{F/A}{\Delta l/L}\ or \ F=\frac{yA \Delta l}{L}\)
The work done from 0 to x = Δl change in length.
Average distance = \(\frac{0+\Delta l}{2}=\frac{\Delta l}{2}\)
work done = force \(\times\)distance
\(= \frac{yA \Delta l}{2} \times \frac{\Delta l}{2}=\frac{ya (\Delta l)^{2}}{2L}\)
=\(\frac{yA x^{2}}{2L}\)
2.
\( Y=2G(1+\sigma)\)
So, 2-4G = 2G(1+σ)
or σ =1.2-1= 0.2
3.
\(A=\pi r^{2} ; \ so\ \frac{\Delta A}{A}=2 \frac{\Delta r}{r}=\frac{4}{100}\)
given \(\sigma = \frac{\frac{\Delta r}{r}}{\frac{\Delta l}{l}}=\frac{1}{2} \ or \ \frac{2\Delta r}{r}=\frac{4}{100}\)
∴ % increase in length
\(\frac{\Delta l}{l} \times 100 =\frac{4}{100} \times 100=4%\)
4.
(i) Linear expansion
(ii) Area expansion
(iii) Volume expansion
5.
This is due to equation of continuity,
a1V1 = a2V2
∴ a1>a2 ∴V1>V2
11th Standard Syllabus & Materials
11th Standard
TN 11th Tamil பீடு பெற நில் - செய்யுள் - காவடிச்சிந்து Important Questions And Answers Study Material - QB365 Set A
NEW11th Standard
TN 11th Tamil பீடு பெற நில் - உரைநடை - மலை இடப்பெயர்கள் : ஓர் ஆய்வு Important Questions And Answers Study Material - QB365 Set A
NEW11th Standard
TN 11th Tamil மாமழை போற்றுதும் - துணைப்பாடம் - யானை டாக்டர் Important Questions And Answers Study Material - QB365 Set A
NEW11th Standard
TN 11th Tamil மாமழை போற்றுதும் - செய்யுள் - ஐங்குறுநூறு Important Questions And Answers Study Material - QB365 Set A
Tamilnadu Stateboard 11th Standard Subjects
Maths
Commerce
Economics
Biology
Business Maths and Statistics
Accountancy
Computer Science
Physics
Chemistry
Maths
Biology
Economics
Physics
Chemistry
History
Business Maths and Statistics
Computer Science
Accountancy
Computer Applications
History
Computer Technology
Commerce
Computer Applications
Computer Technology
Tamil
English
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Tamilnadu Stateboard Standards
