Physics Chapter 7 Oscillations Mcqs Test Online 11th Class Punjab

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Question 1 of 12

Physics

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

Quadruple the mass

Double the mass

Half the mass

Reduce the mass to one fourth

Question 1 of 12

Question 2 of 12

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

4s

12s

16s

8s

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:

Decrease

Increase

Remain unaffected

Become infinite

Question 3 of 12

Question 4 of 12

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

Length of simple pendulum

Gravitational acceleration g

Amplitude

Mass of simple pendulum

Question 4 of 12

Question 5 of 12

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

Half way between them

At rest

Displacement is maximum

Crossing mean position

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

Tk = TM

Tk

2TK=3TM

Question 6 of 12

Question 7 of 12

7. Turning of a radio set is an example of

Free vibrations

Electrical resonance

Mechanical resonance

Musical resonance

Question 7 of 12

Question 8 of 12

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

1s

4s

3s

2s

Question 8 of 12

Question 9 of 12

9. 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 9 of 12

Question 10 of 12

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

k₁ + k₂

k₁k₂/(k₁ + k₂)

√k₁k₂

(k₁ + k₂)/2

Question 10 of 12

Question 11 of 12

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

Low

High

Variable

Constant

Question 11 of 12

Question 12 of 12

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

Resonance

Oscillation Free oscillation

S.H.M

Dampe

Question 12 of 12

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