11th Standard Syllabus & Materials
11th Standard
Tamilnadu 11th Standard Tamil மொழி கலை -செய்யுள் - ஒவ்வொரு புல்லையும் Important Questions And Answers Study Material - QB365
NEW11th Standard
Tamilnadu 11th Standard Tamil கேடில் விழுச்செல்வம் - உரைநடை - தமிழகக் கல்வி வரலாறு Important Questions And Answers Study Material - QB365
NEW11th Standard
Tamilnadu 11th Standard Tamil பீடு பெற நில் - இலக்கணம் - பகுபத உறுப்புகள் Important Questions And Answers Study Material - QB365
NEW11th Standard
Tamilnadu 11th Standard Tamil பீடு பெற நில் - செய்யுள் - குறுந்தொகை Important Questions And Answers Study Material - QB365 Set B
NEW11th Standard
Tamilnadu 11th Standard Tamil பீடு பெற நில் - செய்யுள் - குறுந்தொகை Important Questions And Answers Study Material - QB365 Set A
NEW11th Standard
Tamilnadu 11th Standard Tamil பீடு பெற நில் - செய்யுள் - காவடிச்சிந்து Important Questions And Answers Study Material - QB365 Set B
Published on: 09/11/2020
11th Standard Physics Nature of Physical World and Measurement English Medium Free Online Test 1 Mark Questions with Answer Key 2020-2021
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.
If the error in the measurement of radius of a sphere is 3% then the error in the measurement of volume of the sphere will be ________________.
4%
6%
2%
9%
2.
Scientist preferred platinum - Iridium alloy cylinder for making prototype of 1 kg standard of mass because it is unaffected by ______________.
temperature
pressure
time
amount of substance
3.
One picofarad is equal to ___________farad.
10-18
10-12
10-6
10-24
4.
A source having luminous intensity of one candela emits monochromatic radiation of frequency ________________.
5.4\(\times\)1014 Hz
54\(\times\)1014 Hz
4.5\(\times\)1014 Hz
\({1\over683}Hz\)
5.
The fraction of \(1\over 273.16\) temperature of the triple point of water represents __________.
celsius
fahrenheit
centigrade
kelvin
6.
The term used to mention study of macroscopic system to microscopic constituents is _____________.
unification
macrocosm
reductionism
microcosm
7.
What is the SI unit of linear momentum?
ms-1
ms-2
kg ms-1
kg m2 ms-1
8.
How many parsec are there in one kilometer?
3.084\(\times\)10-16
3.084\(\times\)108
3.24\(\times\)10-14
None
9.
How many AU present in one light year?
6.30\(\times\)104m
9.46\(\times\)1015m
6.2\(\times\)102m
9.4\(\times\)1016m
10.
The fractional error \(\left( {{\triangle x}\over{x}} \right)\) _____________.
\(\pm\left( {{\triangle x}\over{x}} \right)\)
\(\pm n\left( {{\triangle a}\over{a}}\right)\)
\(\pm n \log_e \left( {{\triangle a}\over{a}}\right)\)
\(\pm n \log_{10}{{\triangle a}\over{a}}\)
11.
The dimensions of universal gravitational constant is ______________.
M2L3T-2
M2L2T-1
M-1L3T-2
ML2T-1
12.
If force |F|, velocity |V| and time |T| are taken as to fundamental units then the dimensions of mass are _______________.
FV-1T
FV-1T
FVT-1
FVT-2
13.
Which of the following Statement is wrong?
Strain is a dimensionless quantity
Fundamental quantity is also called the base quantity
force = mass x acceleration
1 Solar year = 1500 days.
14.
Which device is used for measuring the mass of atoms?
Spectrograph
Fermi
Telescope
Microscope
15.
How many AU makes one metre?
3.26 \(\times\) 1011AU
1.496 \(\times\) 1011AU
3.08 \(\times\) 1016 AU
6.684 \(\times\) 10-12AU
16.
Which is deals with the study of materials of an intermediate length scale?
Macro physics
Macroscopic physics
Microscopic physics
All the above
17.
Astronomical Scale is dealt with the _________ Physics
Mesoscopic
Microscopic
Macroscopic
None
18.
Planck's constant (h), speed of light in vacuum (c) and Newton's gravitational constant (G) are taken as three fundamental constants. Which of the following combinations of these has the dimension of length?
\({{\sqrt{hG}}\over{{c}^{{{3}\over{2}}}}}\)
\({{\sqrt{hG}}\over{{c}^{{{5}\over{2}}}}}\)
\(\sqrt{{{hc}\over{G}}}\)
\(\sqrt{{{Gc}\over{{h}^{{{3}\over{2}}}}}}\)
19.
The dimensional formula of Planck's constant h is
[ML2T-1]
[ML2T3]
[MLT-1]
[ML3T-3]
20.
If the error in the measurement of radius is 2%, then the error in the determination of volume of the sphere will be
8%
2%
4%
6%
1.
(d)
9%
2.
(c)
time
3.
(b)
10-12
4.
(a)
5.4\(\times\)1014 Hz
5.
(d)
kelvin
6.
(c)
reductionism
7.
(c)
kg ms-1
8.
(c)
3.24\(\times\)10-14
9.
(a)
6.30\(\times\)104m
10.
(b)
\(\pm n\left( {{\triangle a}\over{a}}\right)\)
11.
(c)
M-1L3T-2
12.
(c)
FVT-1
13.
(d)
1 Solar year = 1500 days.
14.
(a)
Spectrograph
15.
(d)
6.684 \(\times\) 10-12AU
16.
(a)
Macro physics
17.
(c)
Macroscopic
18.
Dimension of Planck's constant is \(\left[\mathrm{ML}^{2} \mathrm{~T}^{-1}\right]\)
Dimension of Gravitational constant is \(\left[\mathrm{M}^{-1} \mathrm{~L}^{+3} \mathrm{~T}^{-1}\right]\)
Dimension of Velocity constant is LT-1
Dimension of Length is L
\(\therefore \text { Dimension of } \frac{\sqrt{h G}}{C^{\frac{3}{2}}}\)
\(=\frac{\sqrt{\left(\mathrm{ML}^{2} \mathrm{~T}^{-1}\right)\left(\mathrm{M}^{-1} \mathrm{~L}^{3} \mathrm{~T}^{-2}\right)}}{\left(\mathrm{LT}^{-1}\right)^{3 / 2}} \)
\(=\frac{\sqrt{\mathrm{L}^{5} \mathrm{~T}^{-3}}}{\mathrm{~L}^{3 / 2} \mathrm{~T}^{-3 / 2}} \)
\(=\frac{\mathrm{L}^{5 / 2} \mathrm{~T}^{-3 / 2}}{\mathrm{~L}^{3 / 2} \mathrm{~T}^{-3 / 2}} \)
\(=\mathrm{L}^{5 / 2-3 / 2} \mathrm{~T}^{3 / 2+3 / 2}=\mathrm{L}^{1} \mathrm{~T}^{0}=\mathrm{L}\)
Dimension of length = L
19.
Dimensional formula of Planck's
\(\text { constant }=\frac{\text { Energy }}{\text { Frequency }}=\frac{\mathrm{ML}^{2} \mathrm{~T}^{-2}}{\mathrm{~T}^{-1}}\)
\(=M L^{2} T^{-2+1}=M L^{2} T^{-1}\)
20.
\(\text { Error in radius }=2 \%\)
\(\Delta r=\frac{2}{100}=0.02\)
\(\text {Volume of the sphere }=\frac{4}{3} \pi r^{3}\)
\(V =\frac{4}{3} \pi r^{3} \)
\(\frac{d V}{V} =\frac{4}{3} \pi \times 3 r^{2} d r \)
\(=3 d r=3(2 \%)=6 \%\)
11th Standard Syllabus & Materials
11th Standard
Tamilnadu 11th Standard Tamil பீடு பெற நில் - செய்யுள் - காவடிச்சிந்து Important Questions And Answers Study Material - QB365 Set A
NEW11th Standard
Tamilnadu 11th Standard Tamil பீடு பெற நில் - உரைநடை - மலை இடப்பெயர்கள் : ஓர் ஆய்வு Important Questions And Answers Study Material - QB365 Set B
NEW11th Standard
Tamilnadu 11th Standard Tamil பீடு பெற நில் - உரைநடை - மலை இடப்பெயர்கள் : ஓர் ஆய்வு Important Questions And Answers Study Material - QB365 Set A
NEW11th Standard
Tamilnadu 11th Standard Tamil மாமழை போற்றுதும் - செய்யுள் - ஐங்குறுநூறு Important Questions And Answers Study Material - QB365 Set B
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
French
Tamilnadu Stateboard Standards
