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 One Mark Questions 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.
The value of one Angstrom is _______________.
1010m
10-10m
10-8m
10-15m
2.
Round of the following number 19.95 into three significant figures.
19.9
20.0
20.1
19.5
3.
The branch of physics deals with the relation between space, time and energy are _______________.
astrophysics
relativity
acoustics
atomic physics
4.
Which of the following is true regarding the physical science?
dealing with non-living things
dealing with living things
study with atomic level
both (a) and (b)
5.
A scientific way of doing things involve _____________.
identifying the problem
collecting data
controlled experimentation
all the above
6.
The mass of an iron sheet is 0.250 kg and volume of the sheet is 1.5m3 Then what is the density of the iron sheet? Express the result in SI unit system.
0.267 kg m-3
0.167 kg m-3
0.255 kg m-3
0.285 kg m-3
7.
The angle of an object is 18.2°. What is the angular diameter of the object in radians?
36.4 rad
3.64\(\times\)10-2 rad
31.74\(\times\)10-2 rad
3.17 rad
8.
The speed of an object v = 90km/h. The same quantity of speed in m/s is ______________.
90
25
45
180
9.
How many \(\mu\)m present in one metre?
10-6 \(\mu\)m
106 \(\mu\)m
10-3 \(\mu\)m
10-2 \(\mu\)m
10.
Find the value of one Au in 1000km _____________.
1.5 \(\times\)105m
2.5\(\times\)106m
1.5\(\times\)1011m
2.5\(\times\)1010m
11.
The density of a cube is measured by measuring its mass and length of its side. If the maximum error in the measurement of mass and length are 5% and 3% respectively, the maximum error in the measurement of density is _____________.
9%
8%
14%
2%
12.
The number of significant figures in 2.64\(\times\)104 kg is ______________.
2
4
5
3
13.
Which of the following statement is wrong?
one fermi = 1015 m
All non-zero digits are significant.
1 AU = 1.496 \(\times\)1011m
Speed is a derived unit
14.
The acceleration of 20 m/s2 in km/h2 is ______________.
2.59 \(\times\) 105 km/h2
1.29 \(\times\) 105 km/h2
2.0 \(\times\)103 km/h2
3.5 \(\times\)105 km/h2
15.
Which unit is used to measure size of a nucleus?
Angstrom
Micron
Nano
Fermi
16.
What is the range of astronomical time scales to microscopic scales?
1015S to 10-15S
109S to 10-18S
1018S to 10-22S
1011S to 10-16S
17.
Microscopic group of Physics dealt with the study of ____________.
classical physics
statistical mechanics
fluid mechanics
quantum physics
18.
The word scientia is meaning to ___________.
exact
to know
control
implement
19.
A length-scale (I) depends on the permittivity (e) of a dielectric material, Boltzmann constant (kB), the absolute temperature (T), the number per unit volume (n) of certain charged particles, and the charge (q) carried by each of the particles. Which of the following expression for I is dimensionally correct?
\(l=\sqrt{{{nq^2}\over{\epsilon {k}_{B}T}}}\)
\(l=\sqrt{{{\epsilon {k}_{B}T}\over{nq^2}}}\)
\(l=\sqrt{{{q^2}\over{e{n}^{{{2}\over{3}}}{k}_{B}}T}}\)
\(l=\sqrt{{{q^2}\over{\epsilon n{k}_{B}T}}}\)
20.
The dimension of \({\left( {\mu}_{0}{\epsilon}_{0} \right)}^{{{1}\over{2}}}\) is
length
time
velocity
force
21.
The density of a material in CGS system of units is 4 g cm-3. In a system of units in which unit of length is 10 cm and unit of mass is 100 g, then the value of density of material will be
0.04
0.4
40
400
22.
The velocity of a particle v at an instant t is given by v = at + br2. The dimensions of b is
[L]
[LT-1]
[LT-2]
[LT-3]
23.
Which of the following pairs of physical quantities have same dimension?
force and power
torque and energy
torque and power
force and torque
24.
Which of the following has the highest number of significant figures?
0.007 m2
2.64\(\times\)1024kg
0.0006032 m2
6.3200 J
25.
One of the combinations from the fundamental physical constants is \({{hc}\over{G}},\) The unit of this expression is
Kg2
m3
S-1
m
1.
(b)
10-10m
2.
(b)
20.0
3.
(b)
relativity
4.
(a)
dealing with non-living things
5.
(d)
all the above
6.
(b)
0.167 kg m-3
7.
(c)
31.74\(\times\)10-2 rad
8.
(b)
25
9.
(b)
106 \(\mu\)m
10.
(a)
1.5 \(\times\)105m
11.
(c)
14%
12.
(d)
3
13.
(a)
one fermi = 1015 m
14.
(a)
2.59 \(\times\) 105 km/h2
15.
(d)
Fermi
16.
(c)
1018S to 10-22S
17.
(d)
quantum physics
18.
(b)
to know
19.
\(\text {Dimension of permittivity } \varepsilon=A^{2} C^{2} N^{-1} m^{-2}\)
\(\text {Dimension of Boltzmann constant } k_{B}=\left[\mathrm{ML}^{2} \mathrm{~T}^{-2} \mathrm{~K}^{-1}\right]\)
\(\text {Dimension of Absolute Temperature }=T\)
No. of charged particles per unit
Volume = No. of dimensions = a
Dimension of charge = AT
Dimension of length = L
\(\text { Dimension of }=\frac{\sqrt{\varepsilon k_{B} T}}{n q^{2}}\)
\(=\frac{\sqrt{\left[\mathrm{A}^{2} \mathrm{C}^{2} \mathrm{~N}^{-1} \mathrm{~m}^{-2}\right]}\left[\mathrm{ML}^{2} \mathrm{~T}^{-2} \mathrm{~K}^{-1}\right][\mathrm{T}]}{[\mathrm{AT}]^{2}}\)
\(=\sqrt{L^{2}}=L\)
\(\therefore \text { Dimension of length }=\mathrm{L}\)
20.
\(\text { Velocity of light } c=\frac{1}{\sqrt{\mu_{0} \varepsilon_{0}}}\)
\(c=\left(\mu_{0} \varepsilon_{0}\right)^{-\frac{1}{2}}\)
\(\text { Hence dimension }\left(\mu_{0} \varepsilon_{0}\right)^{-\frac{1}{2}} \text { is that of velocity. }\)
21.
(c)
40
22.
\(v=a t+b t^{2}\)
\(\text { Dimensional equation is } \mathrm{LT}^{-1}\)
\(=a T=b T^{2}\)
\(\therefore \text { The dimension of } b=\frac{\mathrm{LT}^{-1}}{\mathrm{~T}^{2}}=\mathrm{LT}^{-3}\)
23.
\(\text { Torque }=\text { Force } \times \mathrm{r}\)
\(\text { Dimension of torque }\)
\(=\left[\mathrm{MLT}^{-2}\right][\mathrm{L}]=\left[\mathrm{ML}^{2} \mathrm{~T}^{-2}\right]\)
\(\text { Energy }=\text { Force } \times \text { displacement }\)
\(\text { Dimension of Energy }\)
\(=\left[\mathrm{MLT}^{-2}\right][\mathrm{L}]=\left[\mathrm{ML}^{2} \mathrm{~T}^{-2}\right]\)
24.
The number of significant figures of 6.3200 J is 5
25.
Unit of a (Planck's constant) - Js
Unit of c (Velocity of light) - ms-1
Unit of G (Gravitational Constant) - \(\frac{\mathrm{Nm}^{2}}{\mathrm{Kg}^{2}}\)
\(\therefore \text { Unit of } \frac{h c}{G} \text { is }=\frac{J s \times m s^{-1}}{N m^{2} / k g^{2}} \)
\(=\frac{N m s \times m s^{-1} \times k g^{2}}{N m^{2}}[J=N m] =\mathrm{kg}^{2}\)
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
