11th Standard Syllabus & Materials
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Published on: 13/05/2022
QB365 provides detailed and simple solution for every Book back Questions in class 11 Physics Subject. It will helps to get more idea about question pattern in every book back questions with solution.
latest Book back QuestionsDownload 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.
2.
An ideal spring of spring constant k, is suspended from the ceiling of a room and a block of mass M is fastened to its lower end. If the block is released when the spring is un-stretched, then the maximum extension in the spring is
4\(\frac { Mg }{ k } \)
\(\frac { Mg }{ k } \)
2\(\frac { Mg }{ k } \)
\(\frac { Mg }{ 2k } \)
3.
If sP and sV denote the specific heats of nitrogen gas per unit mass at constant pressure and constant volume respectively, then
sP - sV = 28R
sP - sV = R/28
sP - sV = R/14
sP - sV = R
4.
In an isochoric process, we have
W = 0
Q = 0
ΔU = 0
ΔT = 0
5.
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
6.
The work done by the Sun’s gravitational force on the Earth is
always zero
always positive
can be positive or negative
always negative
7.
Two discs of same moment of inertia rotating about their regular axes passing through center and perpendicular to the plane of the disc with angular velocities ω1 and ω1. They are brought in to contact face to face coinciding with the axis of rotation. The expression for loss of energy during this process is
\(\frac{1}{4}\)\(I(\omega _{1}-\omega _{2})^2\)
\(I(\omega _{ 1 }-\omega _{ 2 })^{ 2 }\)
\(\frac{1}{8}\)\(I(\omega _{1}-\omega _{2})^2\)
\(\frac{1}{2}I\)\((\omega _{1}-\omega _{2})^2\)
8.
A wind-powered generator converts wind energy into electric energy. Assume that the generator converts a fixed fraction of the wind energy intercepted by its blades into electrical energy. For wind speed v, the electrical power output will be proportional to
v
v2
v3
v4
9.
Force acting on the particle moving with constant speed is
always zero
need not be zero
always non zero
cannot be concluded
10.
Two objects are projected at angles 30° and 60° respectively with respect to the horizontal direction. The range of two objects are denoted as R30° and R30°. Choose the correct relation from the following
R30° = R60°
R30° = 4R60°
R30° =\(\frac{R_{60°}}{2}\)
R30° = 2R60°
1.
(d)
2.
\(\mathrm{F} =-\mathrm{kx} \)
\(\therefore \mathrm{x} =\left|-\frac{F}{k^{\prime}}\right|=\frac{F}{k^{\prime}} \)
\(\mathrm{F} =\mathrm{Mg} \text { and } k^{\prime}=\frac{k}{2} \)
\(\therefore \mathrm{x} =\frac{M g}{\frac{k}{2}} \)
\(=\frac{2 M g}{k} \)
3.
\(C_{p}-C_{v}=R\)
For diatomic gas (N2) No of degrees of freedom = 5
\(\therefore S_{p}-S_{v}=R / 28\)
4.
Work done in an isochoric process is zero.
5.
\(n \times \frac{4}{3} \pi r^{3}=\frac{4}{3} \pi R^{3}\)
\(\therefore \text { Energy }=3 V T\left(\frac{1}{r}-\frac{1}{R}\right) \text { is released }\)
6.
(c)
can be positive or negative
7.
Moment of inertia of a disc passing through
\(\text { centre } I=\frac{1}{2} M R^{2}\)
\(\text { Energy of the first disc }=\frac{1}{4} I \omega_{1}^{2}\)
\(\text { Energy of the second disc }=\frac{1}{4} I \omega_{2}^{2}\)
\(\text { Loss of energy }=\frac{1}{4} I\left(\omega_{1}-\omega_{2}\right)^{2}\)
8.
\(\text { Force }=v \frac{d m}{d t}\)
\(=v \frac{d}{d t} \text { (volume } \times \text { density) }\)
\(=v \frac{d}{d t}(A x p) \)
\(=v A p \frac{d x}{d t} \)
\(=v \times A p \times v \)
\(=A p v^{2} \)
Power = Force x Velocity
\(=A p v^{2} \times v=A p v^{3}\)
\(\therefore \text { Power } \alpha v^{3}\)
9.
(b)
need not be zero
10.
Range is same for the angle if projection \(\theta \text { and } 90-\theta\)
11th Standard Syllabus & Materials
11th Standard
TN 11th Tamil பீடு பெற நில் - செய்யுள் - காவடிச்சிந்து Important Questions And Answers Study Material - QB365 Set A
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TN 11th Tamil மாமழை போற்றுதும் - செய்யுள் - ஐங்குறுநூறு Important Questions And Answers Study Material - QB365 Set A
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Accountancy
Computer Science
Physics
Chemistry
Maths
Biology
Economics
Physics
Chemistry
History
Business Maths and Statistics
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