Physics Chapter 7 Oscillations Mcqs Test Online 11th Class Punjab

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Question 1 of 12

Physics

1. While deriving the equation of time period for simple pendulum which quantity should be kept small:

Mass of simple pendulum

Gravitational acceleration g

Length of simple pendulum

Amplitude

Question 1 of 12

Question 2 of 12

2. The restoring force of SHM is maximum when particle:

Crossing mean position

Displacement is maximum

Half way between them

At rest

Question 2 of 12

Question 3 of 12

3. Two springs of spring constants k₁ and k₂ are joined in series. The effective spring constant of the combination is given by

√k₁k₂

k₁k₂/(k₁ + k₂)

k₁ + k₂

(k₁ + k₂)/2

Question 3 of 12

Question 4 of 12

4. The time period of a simple pendulum is 2 seconds. If its length is increased by 4 times, then its period becomes

8s

16s

12s

4s

Question 4 of 12

Question 5 of 12

5. A pendulum suspended from the ceiling of a train has a period T when the train is at rest. When the train is accelerating with a uniform acceleration, the period of oscillation will:

Decrease

Become infinite

Increase

Remain unaffected

Question 5 of 12

Question 6 of 12

6. The heating and cooking of food evenly by microwave oven is an example of

Oscillation Free oscillation

S.H.M

Dampe

Resonance

Question 6 of 12

Question 7 of 12

7. The time period of the same pendulum at Karachi and Murree are related as:

Tk

2TK=3TM

Tk>TM

Tk = TM

Question 7 of 12

Question 8 of 12

8. To make the frequency double of a spring oscillation, we have to:

Double the mass

Quadruple the mass

Reduce the mass to one fourth

Half the mass

Question 8 of 12

Question 9 of 12

9. Turning of a radio set is an example of

Free vibrations

Electrical resonance

Musical resonance

Mechanical resonance

Question 9 of 12

Question 10 of 12

10. In a garden, a boy is swinging in the standing position. How will the time period of the swing be affected if the boy sits down on the swing?

Time period will increase

Time period will depend on the weight of the boy

Time period will decrease

Time period will not change

Question 10 of 12

Question 11 of 12

11. In an isolate system the total energy of vibrating mass and spring is:

Constant

Variable

High

Low

Question 11 of 12

Question 12 of 12

12. If the period of oscillation of mass (m) suspended from a spring is 2s, then the period of mass 4m will be

3s

4s

1s

2s

Question 12 of 12

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