Physics Chapter 7 Oscillations Mcqs Test Online 11th Class Punjab

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Question 1 of 12

Physics

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

2s

1s

3s

4s

Question 1 of 12

Question 2 of 12

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

k₁k₂/(k₁ + k₂)

(k₁ + k₂)/2

√k₁k₂

k₁ + k₂

Question 2 of 12

Question 3 of 12

3. 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:

Increase

Become infinite

Remain unaffected

Decrease

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

4s

12s

Question 4 of 12

Question 5 of 12

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

Amplitude

Mass of simple pendulum

Gravitational acceleration g

Length of simple pendulum

Question 5 of 12

Question 6 of 12

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

Tk = TM

2TK=3TM

Tk>TM

Tk

Question 6 of 12

Question 7 of 12

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

High

Variable

Low

Constant

Question 7 of 12

Question 8 of 12

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

At rest

Displacement is maximum

Half way between them

Crossing mean position

Question 8 of 12

Question 9 of 12

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

Oscillation Free oscillation

Dampe

S.H.M

Resonance

Question 9 of 12

Question 10 of 12

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

Quadruple the mass

Double the mass

Reduce the mass to one fourth

Half the mass

Question 10 of 12

Question 11 of 12

11. Turning of a radio set is an example of

Mechanical resonance

Free vibrations

Electrical resonance

Musical resonance

Question 11 of 12

Question 12 of 12

12. 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 decrease

Time period will increase

Time period will not change

Time period will depend on the weight of the boy

Question 12 of 12

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