Oscillations and Waves (NEET (NTA)National Eligibility cum Entrance Test (Medical) Physics): Questions 22  25 of 195
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Question number: 22
» Oscillations and Waves » Displacement as a Function of Time
Question
The amplitude of a particle executing SHM is 4 cm. At the mean position the speed of the particle is 16 cm/sec. The distance of the particle from the mean position at which the speed of the particle becomes , will be
Choices
Choice (4)  Response  

a. 


b. 


c.  2 cm 

d.  1cm 

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Question number: 23
» Oscillations and Waves » Resonance
Question
A particle with restoring force proportional to displacement and resisting force proportional to velocity is subjected to a force F sin ωt. If the amplitude of the particle is maximum for ω = ω _{1} and the energy of the particle is maximum for ω = ω _{2}, then (where ω _{0} natural frequency of oscillation of particle)
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


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Question number: 24
» Oscillations and Waves » Periodic Functions
Question
A particle executes simple harmonic motion with an angular velocity and maximum acceleration of 3.5 rad/sec and 7.5 m/s ^{2} respectively. The amplitude of oscillation is
Choices
Choice (4)  Response  

a.  0.61 m 

b.  0.36 m 

c.  0.28 m 

d.  0.53 m 

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Question number: 25
» Oscillations and Waves » Simple Harmonic Motion » Energy
Question
Three simple harmonic motions in the same direction having the same amplitude a and same period are superposed. If each differs in phase from the next by 45°, then 
(1) The resultant amplitude is , and the phase of the resultant motion relative to the first is 90°
(2) The energy associated with the resulting motion is
(3) Times the energy associated with any single motion
(4) The resulting motion is not simple harmonic
Select the correct answers and mark it according to the following codes:
Choices
Choice (4)  Response  

a.  1 and 2 are correct 

b.  1 and 3 are correct 

c.  1,2 and 3 are correct 

d.  2 and 4 are correct 

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