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:

Gravitational acceleration g

Amplitude

Length of simple pendulum

Mass of simple pendulum

Question 1 of 12

Question 2 of 12

2. 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:

Become infinite

Decrease

Increase

Remain unaffected

Question 2 of 12

Question 3 of 12

3. 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 not change

Time period will increase

Time period will depend on the weight of the boy

Time period will decrease

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

2s

1s

3s

4s

Question 4 of 12

Question 5 of 12

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

(k₁ + k₂)/2

k₁k₂/(k₁ + k₂)

k₁ + k₂

√k₁k₂

Question 5 of 12

Question 6 of 12

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

Half the mass

Quadruple the mass

Double the mass

Reduce the mass to one fourth

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

High

Low

Constant

Variable

Question 8 of 12

Question 9 of 12

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

Half way between them

Displacement is maximum

Crossing mean position

At rest

Question 9 of 12

Question 10 of 12

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

16s

4s

12s

8s

Question 10 of 12

Question 11 of 12

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

Oscillation Free oscillation

Resonance

Dampe

S.H.M

Question 11 of 12

Question 12 of 12

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

2TK=3TM

Tk>TM

Tk

Tk = TM

Question 12 of 12

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