Physics Chapter 7 Oscillations Mcqs Test Online 11th Class Punjab

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Question 1 of 12

Physics

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

Crossing mean position

At rest

Half way between them

Displacement is maximum

Question 1 of 12

Question 2 of 12

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

Double the mass

Half the mass

Quadruple the mass

Reduce the mass to one fourth

Question 2 of 12

Question 3 of 12

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

16s

8s

4s

12s

Question 3 of 12

Question 4 of 12

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

3s

2s

4s

1s

Question 4 of 12

Question 5 of 12

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

Tk = TM

Tk>TM

2TK=3TM

Tk

Question 5 of 12

Question 6 of 12

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

Constant

High

Variable

Low

Question 6 of 12

Question 7 of 12

7. Turning of a radio set is an example of

Mechanical resonance

Free vibrations

Musical resonance

Electrical resonance

Question 7 of 12

Question 8 of 12

8. 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

Remain unaffected

Increase

Question 8 of 12

Question 9 of 12

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

Mass of simple pendulum

Length of simple pendulum

Amplitude

Gravitational acceleration g

Question 9 of 12

Question 10 of 12

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

Oscillation Free oscillation

S.H.M

Resonance

Dampe

Question 10 of 12

Question 11 of 12

11. 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 depend on the weight of the boy

Time period will not change

Time period will increase

Time period will decrease

Question 11 of 12

Question 12 of 12

12. 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 12 of 12

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