XI-Physics Online Test

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Prepared by Dr. Nujoom Sageer Karat, Ph.D. Indian Institute of Science ,Bangalore Mobile: 9901655223

STAY AT HOME AND LEARN ...

NAME *

Name of School *

Mobil Number *

Address with Pincode *

Choose the correct answer from the following :

1.The branch of physics, that was developed to understand and improve the working of heat engines is ...,......... *

1 point

a) Optics

b) Thermodynamics

c) Electronics

d) Electrodynamics

2. Percentage error in the measurement of mass and speed are 2% and 3 % respectively. The error in the estimate of kinetic energy obtained by measuring mass and speed will be *

1 point

(1) 12 %

(2) 10 %

(3) 8 %

(4) 2 %

3.Select a TRUE statement from the following : *

1 point

a) Year and light year have the same dimensions.

b) Intensity of gravitational field has same dimensions as that of acceleration.

c) One angstrom is the mean distance between sun and earth.

d) Parsec is a unit of time.

1 point

[a] D

[b] F

[c] C

[d] E

5.A ball is thrown upwards with a velocity of 20 m/s. Acceleration due to gravity is 10 m/s2. Find the total time taken to reach back the ground. *

1 point

[a] 2 s

[b] 4s

[c] 3 s

[d] 8 s

1 point

[a]

[b]

[c]

[d]

1 point

a) 1:1

b) 1:2

c) 1:3

d) 1:4

8.Area under force-time graph gives *

1 point

[a] Average force

[b] Impulse

[c] inertia

[d] acceleration

1 point

[a]

[b]

[c]

[d]

10.When two bodies collide elastically, then *

1 point

[a] KE of the system alone is conserved

[b] Only momentum is conserved

[c] Both KE and momentum are conserved

[d] Neither KE nor momentum is conserved

11.A ball of mass 2 kg is dropped from a height of 10 m. ( g = 10 m/s2 ) Work done by gravitational force is *

1 point

[a] + 200 J

[b] -200 J

[c] + 100 J

[d] – 100 J

1 point

[a]

[b]

[c]

[d]

13.. Three balls of masses m, m and 2 m are placed at three corners of a triangle having co-ordinates (2.5,1.5), (3.5, 1.5) and (3,3) respectively. The co-ordinates of centre of mass of the system is *

1 point

a) (6,2)

b) (4,2.25)

c) (3,2.25)

d) (2,1.25)

14.. If the change in the value of g at a small height ‘h’ above the surface of the earth is same as at a depth x below it, then *

1 point

a) x = h

b) x = 2h

c) x = h/2

d) x = h2

15.The time period of an earth satellite in circular orbit is independent of *

1 point

[a] The mass of the satellite

[b] Radius of its orbit

[c] Both the mass of satellite and radius of the orbit

[d] Neither the mass of satellite nor the radius of its orbit

16The Young’s modulus of the material of a wire is equal to the *

1 point

[a] Stress required to increase its length four times

[b] Stress required to produce unit strain

[c] Strain produced in it

[d] Half the strain produced in it

17.A liquid will not wet the surface of a solid if theangle of contact is *

1 point

[a] 0degree

[b] 45 degree

[c] 60 degree

[d] > 90 degree

1 point

[a]

[b]

[c]

[d]

19.The efficiency of a Carnot engine working between 800 K and 500 K is *

1 point

[a] 0.625

[b] 0.375

[c] 0.4

[d] 0.5

20.Which is not dependent on path ? *

1 point

[a] Temperature

[b] Energy

[c] Work

[d] None of these

1 point

[a]

[b]

[c]

[d]

1 point

[a]

[b]

[c]

[d]

1 point

[a]

[b]

[c]

[d]

1 point

[a]

[b]

25.Resonating column has resonant frequencies as 100 Hz, 300 Hz, 500 Hz. Then, it may be *

1 point

[a] An open pipe

[b] A pipe closed at both ends

[c] Pipe closed at one end

[d] None of these

കോവിഡ് അവധി ദിവസങ്ങളിൽ വീട്ടിലിരുന്ന് പരീക്ഷാ റിവിഷൻ ഭംഗിയായി നടത്തുകയും.അടുത്ത വർഷത്തേക്കുള്ള നിങ്ങളുടെ ഭാവി പ്ലാൻ തയ്യറാക്കുകയും ചെയ്യണം . താത്പര്യം അഭിരുചി എന്നിവയുടെ അടിസ്ഥാനത്തിൽ നിങ്ങളുടെ തൊഴിൽ മേഖല എന്തായിരിക്കണമെന്നും അതിലേക്ക് എത്തിചേരാനുള്ള മാർഗ്ഗങ്ങളും മുൻകൂട്ടി ആസൂത്രണം ചെയ്യുക. നിങ്ങളെ സഹായിക്കുവാൻ താഴെ കൊടുത്ത കരിയർ പോർട്ടൽ സന്ദർശിക്കുക. നമ്മൾ ഒറ്റക്കെട്ടായി ഈ കോവിഡ് കാലം അതിജീവിക്കും ..

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