11th Standard CBSE Syllabus & Materials
11th Standard CBSE
CBSE 11th Computer Science Software Concepts Model Questions Papers Study Material - QB365
NEW11th Standard CBSE
CBSE 11th Computer Science Basic Computer Organisation Model Questions Papers Study Material - QB365 Set B
NEW11th Standard CBSE
CBSE 11th Computer Science Basic Computer Organisation Model Questions Papers Study Material - QB365 Set A
NEW11th Standard CBSE
CBSE 11th Economics Introduction to Economics Model Questions Papers Study Material - QB365 Set C
NEW11th Standard CBSE
CBSE 11th Economics Introduction to Economics Model Questions Papers Study Material - QB365 Set B
NEW11th Standard CBSE
CBSE 11th Economics Introduction to Economics Model Questions Papers Study Material - QB365 Set A
Published on: 21/10/2025
Download CBSE Class 11th Standard CBSE Physics question papers, sample papers, important questions, and previous year solved papers in PDF format. Get free study materials, NCERT solutions, and exam preparation resources for Class 11th Standard CBSE Physics
Questions + Answers key
Take MCQ Physics Test
1.
A particle moves on a given line with a constant speed \(\upsilon \). At a certain time it is at a point P on its straight line path. O is fixed point. The value of \(\overrightarrow { OP } \times \overrightarrow { \upsilon } \) is (where y is perpendicular distance from O to given line)
- y\(\upsilon \)\(\hat{k}\)
-2y\(\upsilon \)\(\hat{k}\)
-3y \(\upsilon \)\(\hat{k}\)
none
2.
The radius of gyration of a uniform rod of length L about an axis passing through its centre of mass is:
\(\frac { L }{ \sqrt { 12 } } \)
\(\frac { l }{ \sqrt { 2 } } \)
\(\frac { { L }^{ 2 } }{ 12 } \)
\(\frac { { L }^{ 2 } }{ \sqrt { 3 } } \)
3.
If the resultant of three forces \(\overrightarrow { F } _{ 1 }=p\hat { i } +3\hat { j } -\hat { k } ,\overrightarrow { F } _{ 2 }\)and \(\overrightarrow { F } _{ 3 }=6\hat { i } -\hat { k } \) acting on a particle has a magnitude equal to 5 units, then the value of p is
-6
-4
3
4
4.
Two vessels having equal volume contain molecular hydrogen at one atmosphere and helium at two atmosphere pressure respectively.If both samples are at the same temperature the mean velocity of hydrogen molecule is
equal to that of helium
twice that of helium
half that of helium
\(\sqrt { 2 } \) times that of helium
5.
The speed of sound in a gas is v. The rms speed of molecules of this gas is C. If \(\Upsilon =\frac { { C }_{ P } }{ C_{ V } } \) then the ratio of v and C is
\(\frac { 3 }{ \Upsilon } \)
0.33 \(\Upsilon \)
\(\sqrt { \frac { 3 }{ \Upsilon } } \)
\(\sqrt { \frac { \Upsilon }{ 3 } } \)
6.
A couple produces a:
pure linear motion
pure rotational motion
none of the above.
both linear and rotational motion
7.
The area under the velocity time graph between any two instants t = t1 and t = t2 gives the distance covered in a time \(\delta \) t = t2 - t1.
only if the particle moves with a uniform acceleration
only if the particle moves with a uniform velocity.
only if the particle moves with an acceleration increasing at a uniform rate.
in all cases irrespective of whether the motion is one of uniform velocity, or of uniform acceleration or of variable acceleration
8.
The displacement x of a particle varies with time according to the relation x=\(\frac { a }{ b } \)(1-e-bt). Then
At t =\(\frac { 1 }{ b } \) , the displacement of the particle is nearly (2/3) (a/b).
The particle cannot reach a point at a distance x from its starting position if x> a/ b.
The velocity and acceleration of the particle at t = 0 are a and - ab respectively.
The particle will come back to its starting point as t ⇾∞.
9.
The work done by the external forces on a system equals the change in
total energy
kinetic energy
potential energy
none of these
10.
A heavy stone is thrown from a cliff of height h with a speed v. The stone will hit the ground with maximum speed if it is thrown
vertically downward
vertically upward
horizontally
the speed does not depend on the initial direction
11.
Two particles P and Q describe SHM of same amplitude a and frequency v along the same straight line. The maximum distance between two particles is √2 a. The phase difference between the particles is
zero
π/2
π/6
π/3
12.
A simple pendulum of frequency n is taken upto a certain height above the ground and then dropped along with its support so that it falls freely under gravity. The frequency of oscillations of the falling pendulum will
become greater than n
become zero
remain equal to n
become less than n
13.
The number of particles crossing per unit area perpendicular to X-axis in unit time is \(N=-D\frac { { n }_{ 2 }-{ n }_{ 1 } }{ { x }_{ 2 }-{ x }_{ 1 } } \) where n1 and n2 are number of particles per unit volume for the value of X1 and x2 respectively. The dimensions of diffusion constant D are _____.
M0LT2
M0L2T-4
M0LT-3
M0L2T-1
14.
The SI units of the universal gravitational constant G are _____.
kg m2 S-2
kg-l m3 S-2
Nm2 kg-2
N kg2m-2
15.
A string is stretched between fixed points separated by 75.0 cm. It is observed to have resonant frequencies of 420 Hz and 315 Hz. There are no other resonant frequencies between these two. Then the lowest resonance frequency for this string is
1.05 Hz
1050 Hz
10.5 Hz
105 Hz
16.
The whistle of a railway engine is heard in winter at much longer distances. This is due to
decrease in velocity of sound in winter.
decrease in the density of air w.r.t. height from the surface of the earth
cold air absorbs much smaller energy from-sound waves
increase in the density of air w.r.t. height from the surface of the earth.
17.
The rates of cooling of two different liquids put in exactly similar calorimeters and kept in identical surroundings are the same if
the masses of the liquids are equal
equal masses of the liquids at the same temperature are taken
different volumes of the liquids at the same temperature are taken
equal volumes of the liquids at the same temperature are taken
18.
At about 4°C, a certain amount of water has maximum
energy
specific heat
density
Volume
19.
Elastic limit is equal to
Young's modulus
Modulus of rigidity
stress
strain
20.
Young's modulus of a material has the same unit as
stress
energy
compressibility
pressure
21.
A satellite of mass m revolves around the earth of radius R at a height x from its surface. If g is the acceleration due to gravity on the surface of the earth, the orbital speed of the satellite is
gx
\(\frac{gR}{R-x}\)
\(\frac{gR^2}{R+x}\)
\((\frac{gR^2}{R+x})^{\frac{1}{2}}\)
22.
If g is the acceleration due to gravity on the earth's surface, the gain in the potential energy of an object of mass m raised from the earth's surface to a height equal to the radius R of the earth,is
\(\frac{1}{2}mgR\)
2mgR
mgR
\(\frac{1}{4}mgR\)
23.
At which of the following temperature, the value of surface tension of water is minimum?
4°C
25°C
50°C
75°C
24.
For a ball falling in a liquid with constant velocity, ratio of resistance force due to the liquid to that due to gravity is
1
\(\frac{2a^2\rho g}{9\eta^2}\)
\(\frac{2a^2(\rho-\sigma)g}{9\eta}\)
none
25.
An insect is crawling up on the concave surface of a fixed hemispherical bowl of radius R. If the coefficient of friction is \({1\over3}\) then the height up to which the insect can crawl is nearly,_______.
5% of R
6% of R
6.5% of R
7.5% of R
26.
A block of mass M is pulled along a horizontal frictionless surface by a rope of mass m. Force P is applied at one end of the rope. The force which the rope exerts on the block is: _______.
\({P\over M-m}\)
\({PM\over m+M}\)
\({P\over M(m+M)}\)
\({Pm\over M-m}\)
27.
An engine has an efficiency of 1/6 when the temperature of sink is reduced by 62°C, its efficiency is doubled, temperature of the source is _______.
37°C
62°C
99°C
124°C
28.
The given quantity of an ideal gas is at pressure P and absolute Temperature T. The isothermal bulk Modulus of the gas is _______.
2/3P
P
3/2P
2P
29.
Who discovered scattering of light?
C. V. Raman
W. Wein
Hess
W. L. Bragg
30.
What is the relative magnitude of electromagnetic force with respect to strong nuclear forces?
10-38
10-13
10-32
10-2
1.
(a)
- y\(\upsilon \)\(\hat{k}\)
2.
(a)
\(\frac { L }{ \sqrt { 12 } } \)
3.
(c)
3
4.
(d)
\(\sqrt { 2 } \) times that of helium
5.
(d)
\(\sqrt { \frac { \Upsilon }{ 3 } } \)
6.
(b)
pure rotational motion
7.
(d)
in all cases irrespective of whether the motion is one of uniform velocity, or of uniform acceleration or of variable acceleration
8.
(a)
At t =\(\frac { 1 }{ b } \) , the displacement of the particle is nearly (2/3) (a/b).
9.
(a)
total energy
10.
(d)
the speed does not depend on the initial direction
11.
(a)
zero
12.
(b)
become zero
13.
(d)
M0L2T-1
14.
(c)
Nm2 kg-2
15.
(d)
105 Hz
16.
(a)
decrease in velocity of sound in winter.
17.
(d)
equal volumes of the liquids at the same temperature are taken
18.
(c)
density
19.
(c)
stress
20.
(a)
stress
21.
(d)
\((\frac{gR^2}{R+x})^{\frac{1}{2}}\)
22.
(a)
\(\frac{1}{2}mgR\)
23.
(d)
75°C
24.
(a)
1
25.
(a)
5% of R
26.
(b)
\({PM\over m+M}\)
27.
(c)
99°C
28.
(b)
P
29.
(a)
C. V. Raman
30.
(d)
10-2
11th Standard CBSE Syllabus & Materials
11th Standard CBSE
CBSE 11th Accountancy Introduction to Accounting Model Questions Papers Study Material - QB365 Set B
NEW11th Standard CBSE
CBSE 11th Accountancy Introduction to Accounting Model Questions Papers Study Material - QB365 Set A
NEW11th Standard CBSE
CBSE 11th Studies Public, Private and Global Enterprises Model Questions Papers Study Material - QB365 Set C
NEW11th Standard CBSE
CBSE 11th Studies Public, Private and Global Enterprises Model Questions Papers Study Material - QB365 Set B
NCERT Books
Syllabus
Exam Pattern
Sample Question Papers
Previous year Question Papers
Important Notes
MCQ Practice test
NCERT Exemplers
Case study Questions
Image Based Questions
Passage based Questions
HOT Questions
Value Based Questions
Model Questions Papers
NCERT ( Book Back ) Questions
Assertion and Reason
Important Questions And Answers
CBSE 11th Standard CBSE Subjects
CBSE Standards
