Test Series-2

### Instructions

• Your test contains 10 multiple choice questions with only one answer
• You can Finish this test any time using 'Submit' button.
• Once finished you get a chance to review all question with correct answers and their solutions.
• You will be awarded three (2) marks each for indicated correct response of each question.

1.The displacement of particle is as per equation
y=at2+bt+c
Find the acceleration at time t=0
• 2a
• b
• c
• 2a+b

2.which of these is not true for adiabatic process ?
• dQ=0
• dU+dW=0
• dT=0
• Molar specific heat is zero

3.which of these is inertial frame of refrence?
• A observer in car slowing down
• A observer in train speeding up
• A observer in car in uniform circular motion
• A observer in cycle moving with constant velocity.

4. Find the number of electrons in 5 Columb?
• 31.25*1018
• 31.5*1018
• 31*1018
• 32.25*1018
5.Consider the following two statement
Statement A:Workdone in a closed loop by electrical force is zero
Statement B:The force on one charge due to another charge is not affected by the presence of other charges near by.
• A & B both are correct
• A is correct only
• B is correct only
• A & B both are wrong

6.What is not true of uniform circular motion ?
• Centrepetal force=mv2/R
• angular velocity=v/r
• angular acceleration >0
• Speed is constant

7. A particle moves such that
x=asinwt and y =bcoswt
what is the trajactory of the particle?
• Eclipse
• circle
• straight line
• parabola

8.A line source emits a cylindrical wave.if the medium absorbs no energy,the amplitude will vary with distance y from the source as proportional to
• y-1
• y-2
• y-1/2
• y1/2

9.find the maximum attainable temperature of ideal gas when gas undergoes through the process P=P0-aV2
• (2P0/2R)(P0/3a)1/2
• (4P0/2R)(P0/3a)1/2
• (2P0/2R)(P0/a)1/2
• (2P0/2R)(P0/2a)1/2

10. Two masses m1 = 6 kg and m2 = 14 kg tied to a string are hanging over a light frictionless pulley. What is the acceleration of the masses when lift free to move?(g = 10 m/s2)
• 4 m/s2
• 2 m/s2
• 3 m/s2
• 1 m/s2