11th Standard Syllabus & Materials
11th Standard
TN 11th Tamil இயற்கை வேளாண்மை,சுற்றுச்சூழல் -செய்யுள் - மனோன்மணீயம் Important Questions And Answers Study Material - QB365 Set A
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TN 11th Tamil என்னுயிர் என்பேன் -துணைப்பாடம் - இசைத்தமிழர் இருவர் Important Questions And Answers Study Material - QB365 Set A
NEW11th Standard
TN 11th Tamil மொழி கலை -செய்யுள் - ஒவ்வொரு புல்லையும் Important Questions And Answers Study Material - QB365 Set A
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: 28/08/2019
Properties of Matter
Download Tamil Nadu 11th 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.
The work done against surface tension in blowing a soap bubble from a radjus of 5 cm to 15 cm is ____________. (surface tension of soap solution is 30\(\times\)10-3 Nm-1)
2.4 πmJ
4.8 π mJ
2.4 π J
4.8 π J
2.
Water rises in a capillary tube to a certain height such that the upward force due to the surface tension is balanced by 62.84\(\times\)10-5N force due to the weight of the liquid column. If the surface tension of water is 70\(\times\)10-3Nm the radius of the capillary tube is ____________.
1.43\(\times\)10-3m
2.83\(\times\)10-3 m
1.43\(\times\)10-2 m
2.83\(\times\)10-3 m
3.
Two metal wires of identical dimensions are connected in series if σ1 and σ2 are the conductivity of the metal wire respectively, the effective conductivity of the combination is ______________.
\(\frac{\sigma_{1}+\sigma_{2}}{2\sigma_{1}\sigma_{2}}\)
\(\frac{\sigma_{1}+\sigma_{2}}{\sigma_{1}\sigma_{2}}\)
\(\frac{\sigma_{1}\sigma_{2}}{(\sigma_{1}+\sigma_{2})}\)
\(\frac{2\sigma_{1}\sigma_{2}}{\sigma_{1}+\sigma_{2}}\)
4.
Steam at 100°C is passed into 20g of water at 10°C when water acquires a temp of 80°C, the mass of water present will be ____________ (take specifies heat of water 1 cal g-t c-1 & latent heat of steam = 540 cal g-1C-1)
42.5 g
22.5g
24g
31.5g
5.
The molar specific heats of an ideal gas at a constant pressure & volume are denoted by Cp&Cv if r =\(\frac{C_{p}}{C_{v}}\) & R the universal gases constant then Cv is equal _____________.
\(\frac{1+r}{1-r}\)
\(\frac{R}{1-r}\)
\(\frac{r-1}{R}\)
rR
6.
In a horizontal pipe of non-uniform cross section, water flows with a velocity of 1 ms-1 at a point where the diameter of the pipe is 20 cm. The velocity of water (1.5 m s-1) at a point where the diameter of the pipe is (in cm)
8
16
24
32
7.
The following four wires are made of the same material. Which of these will have the largest extension when the same tension is applied?
length = 200 cm, diameter = 0.5 mm
length= 200 cm, diameter = 1 mm
length = 200 cm, diameter = 2 mm
length= 200 cm, diameter = 3 m
8.
A certain number of spherical drops of a liquid of radius R coalesce to form a single drop of radius R and volume V. If T is the surface tension of the liquid, then
energy = 4 V T \(\left( \frac { 1 }{ r } -\frac { 1 }{ R } \right) \)is released
energy = 3 V T \(\left( \frac { 1 }{ r } +\frac { 1 }{ R } \right) \)is absorbed
energy = 3 V T \(\left( \frac { 1 }{ r } -\frac { 1 }{ R } \right) \)is released
energy is neither released nor absorbed
9.
10.
Consider two wires X and Y. The radius of wire X is 3 times the radius of Y. If they are stretched by the same load then the stress on Y is
equal to that on X
thrice that on X
nine times that on X
Half that on X
1.
(a)
2.4 πmJ
2.
(a)
1.43\(\times\)10-3m
3.
(b)
\(\frac{\sigma_{1}+\sigma_{2}}{\sigma_{1}\sigma_{2}}\)
4.
(b)
22.5g
5.
(b)
\(\frac{R}{1-r}\)
6.
(b)
16
7.
\(\mathrm{Y} =\frac{F / A}{\Delta l / l}=\frac{F l}{A \Delta l} \)
\(=\Delta l=\frac{F l}{A Y}
\)
\(\Delta l \text { is most when } l=200 \mathrm{~cm} \mathrm{~d}=0.5 \mathrm{~mm}\)
8.
\(n \times \frac{4}{3} \pi r^{3}=\frac{4}{3} \pi R^{3}\)
\(\therefore \text { Energy }=3 V T\left(\frac{1}{r}-\frac{1}{R}\right) \text { is released }\)
9.
(b)
10.
\(\text { Stress, } \ \frac{F}{A}=Y \frac{\Delta L}{L}\)
\(\text { Stress } \mathrm{S}=\frac{\text { Force }}{\pi r^{2}}\)
\(S_{1} \propto \frac{1}{r_{1}^{2}} \ S_{2} \propto \frac{1}{r_{2}^{2}} \ F \text { is same }\)
\(\frac{S_{1}}{S_{2}}=\frac{r_{2}^{2}}{r_{1}^{2}} \quad r_{1}=3 r_{2}\)
\(\text { Let } S_{1}=S_{x} \text { and } S_{2}=S_{y}\)
\( \frac{S_{x}}{S_{y}}=\frac{r_{2}^{2}}{\left(3 r_{2}\right)^{2}}=\frac{r_{2}^{2}}{9 r_{2}^{2}}=\frac{1}{9} \)
\( \frac{S_{x}}{S_{y}}=\frac{1}{9} \)
\(\therefore S_{y}=9 S_{x} \)
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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