11th Standard Syllabus & Materials
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TN 11th Tamil பீடு பெற நில் - துணைப்பாடம் - வாடிவாசல் Important Questions And Answers Study Material - QB365 Set A
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TN 11th Tamil பீடு பெற நில் - செய்யுள் - குறுந்தொகை Important Questions And Answers Study Material - QB365 Set A
Published on: 10/11/2020
11th Standard Physics English Medium Free Online Test 1 Mark Questions 2020 - Part Four
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.
Consider two uniform wires vibrating simultaneously in their fundamental notes. The tensions, densities, lengths and diameter of the two wires are in the ratio 8 : 1, 1 : 2, x : y and 4 : 1 respectively. If the note of the higher pitch has a frequency of 360 Hz and the number of beats produced per second is 10, then the value of x : y is
36 : 35
35 : 36
1 : 1
1 : 2
2.
The damping force on an oscillator is directly proportional to the velocity. The units of the constant of proportionality are
kgms−1
kgms−2
kgs−1
kgs
3.
If the temperature and pressure of a gas is doubled the mean free path of the gas molecules
remains same
doubled
tripled
quadrapoled
4.
The kinetic energy of the satellite orbiting around the Earth is
equal to potential energy
less than potential energy
greater than kinetic energy
zero
5.
Twelve forces each of magnitude 10N acting on a body at an angle of 30° with other forces then their resultant is __________.
10 N
120 N
\(\frac{10}{\sqrt{3}}\)
zero
6.
If the percentage error in the measurement of mass and momentum of a body are 3% and 2% respectively, then maximum possible error in kinetic energy is ______________
2%
3%
5%
7%
7.
The distance travelled by a particle starting from rest and moving with an acceleration \({4\over3}ms^{-2}\), in the third second is _____________.
\({10\over 3}m\)
\({19\over3}m\)
6m
4m
8.
The pair of quantities having same dimensions is ______________.
Impulse and Surface Tension
Angular momentum and Work
Work and Torque
Young's modulus and Energy
9.
A boy standing at the top of a tower of 20 m height drops a stone. Assuming g = 10 m S-2, the velocity with which it hits the ground is ______________.
10.0m/s
20.0m/s
40.0m/s
5.0m/s
10.
Preeti reached the metro station and found that the escalator was not working. She walked up the stationary escalator in time t1. On other days, if she remains stationary on the moving escalator, then the escalator takes her up in time f2. The time taken by her to walk upon the moving escalator will be _______________
\({t_1t_2\over t_2-t_1}\)
\({t_1t_2\over t_2+t_1}\)
t1-t2
\({ t_2+t_1\over 2}\)
11.
A stone is dropped from a height h. It hits the ground with a certain momentum P. If the same stone is dropped from a height 100% more than the previous height, the momentum when it hits the ground will change by _______________.
68%
41%
200%
100%
12.
Which one out of the following statement is false?
A body can have zero velocity and still be accelerated
A body can have a constant velocity and still have a varying speed
A body can have a constant speed and still have a varying velocity
The direction of the velocity of a body can change when its acceleration is constant
13.
If energy (E), velocity (V) and time (T) are chosen as the fundamental quantities, the dimensional formula of surface tension will be ______________.
Ey-1 T2
Ey-2 T2
Ey1 T-2
Ey-2 T-2
14.
When a particle is in uniform motion it does not have ______________.
radial velocity and radial acceleration
radial velocity and transverse acceleration
transverse velocity and radial acceleration
transverse velocity and transverse acceleration
15.
The force required to stop a moving object depends on its ____________.
mass alone
velocity alone
mass or velocity
mass and velocity
16.
From which law, the law of conservation of momentum can be derived?
Newton's first law of motion
Newton's second law of motion
Newton's third law of motion
All of these laws
17.
A man getting down a running bus falls forward:
due to inertia of rest, road is left behind and man reaches forward
due to inertia of motion upper part of body continues to be in motion in forward direction while feet come to rest as soon as they touch the road
as he leans forward as a matter of habit
due to the combined effect of all the three factors stated in (a), (b) and (c)
18.
The motion of a rocket is based on the principle of conservation of _____________.
Linear momentum
K.E
Mass
Angular momentum
19.
A spacecraft of mass M moving with velocity v in free space explodes and breaks into two pieces. After the explosion a mass m of the spacecraft is left stationary. The velocity of other part is _______________.
\(\frac { mv }{ M-n } \)
\(\frac { M+n }{ Mv } \)
\(\frac { Mv }{ M-m } \)
\(\frac { Mv }{ m } \)
20.
The force on a particle as the function of displacement x is given by F = 9 + 0.3x. The work done corresponding to displacement of 6. particle from x = 0 to x = 2 unit is
18.6 J
21 J
25 J
9.6 J
21.
A ball with an initial momentum P collides normally with a rigid wall. If P1 is the linear momentum after the perfectly elastic collision, then ____________.
P1 = P
P1 = -P
P1 = 2P
P1 =-2P
22.
A spring of force constant k is cut into two pieces such that one piece is double the length of the other. Then, the long piece will have a force constant of
\(\frac{2}{3}\)k
\(\frac{3}{2}\)k
3k
6k
23.
If E & B respectively, represent electric field and magnetic induction field, then the ratio E & B has the dimensions of ______________.
angle
acceleration
velocity
displacement
24.
A vehicle is moving along the positive x direction, if sudden brake is applied, then
frictional force acting on the vehicle is along negative x direction
frictional force acting on the vehicle is along positive x direction
no frictional force acts on the vehicle
frictional force acts in downward direction
25.
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.
No. of beats = 10
Frequency of pitch in the first wire
\(f_{1}=360 \mathrm{~Hz}\)
\(\therefore \text { Frequency of pitch in the second wire}\)
\(f_{2} =360-10=350 \mathrm{~Hz} \)
\(\text { Ratio of length }=x: y\)
\(l \propto f\)
\(\therefore \mathrm{x}: \mathrm{y} =\mathrm{f}_{1}: \mathrm{f}_{2} \)
\(=360: 350 =36: 35 \)
2.
\(\mathrm{F}_{\mathrm{d}} \propto \mathrm{v} \)
\(\mathrm{F}_{\mathrm{d}}=-\mathrm{bv} ; \quad \mathrm{F}_{\mathrm{d}}=\mathrm{kv} \)
\(\therefore \mathrm{k}=\frac{F_{d}}{v} \)
\(\text { Units of } k=\frac{k g m s^{-2}}{m s^{-1}}\)
\(\mathrm{k}=\mathrm{kg} \mathrm{s}^{-1}\)
3.
Mean free path is independent of temperature and pressure
4.
Escape speed ve = \(\sqrt 2g R\)
if g' = 4g
then \(v'_e\) = \(\sqrt (4g) R\)
= \(\sqrt 2g R \) \(\times\)2
= 2ve
5.
(d)
zero
6.
(d)
7%
7.
(a)
\({10\over 3}m\)
8.
(c)
Work and Torque
9.
(b)
20.0m/s
10.
(b)
\({t_1t_2\over t_2+t_1}\)
11.
(b)
41%
12.
(b)
A body can have a constant velocity and still have a varying speed
13.
(d)
Ey-2 T-2
14.
(b)
radial velocity and transverse acceleration
15.
(d)
mass and velocity
16.
(c)
Newton's third law of motion
17.
(b)
due to inertia of motion upper part of body continues to be in motion in forward direction while feet come to rest as soon as they touch the road
18.
(a)
Linear momentum
19.
(c)
\(\frac { Mv }{ M-m } \)
20.
(a)
18.6 J
21.
(b)
P1 = -P
22.
For any spring kl = constant
Length of the longer piece
\(=\frac{2 l}{3} \)
\(\therefore k^{1} \times \frac{2 l}{3} =k l \)
\(\therefore k^{1}=\frac{k l \times 3}{2 l}=\frac{3}{2} k \)
\(\therefore k^{1}=\frac{3}{2} k \)
23.
(c)
velocity
24.
(a)
frictional force acting on the vehicle is along negative x direction
25.
\(\text { Error in radius }=2 \%\)
\(\Delta r=\frac{2}{100}=0.02\)
\(\text {Volume of the sphere }=\frac{4}{3} \pi r^{3}\)
\(V =\frac{4}{3} \pi r^{3} \)
\(\frac{d V}{V} =\frac{4}{3} \pi \times 3 r^{2} d r \)
\(=3 d r=3(2 \%)=6 \%\)
11th Standard Syllabus & Materials
11th Standard
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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