AIIMS (All India Institute of Medical Sciences) Physics: Questions 409  413 of 500
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Question number: 409
» Oscillations and Waves » Displacement as a Function of Time
Question
A particle executes simple harmonic motion with an angular velocity and maximum acceleration of. and respectively. Amplitude of the oscillation is –
Choices
Choice (4)  Response  

a.  1.0m 

b.  0.9 m 

c.  0.8 m 

d.  0.5 m 

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Question number: 410
» Rotational Motion » Rigid Body Rotation Equations of Rotational Motion
Question
A rope is wound around a hollow cylinder of and radius. If the rope is pulled with a force , the angular acceleration of cylinder and the linear acceleration of the rope are respectively –
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


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Question number: 411
» Work, Energy and Power » WorkEnergy Theorem
Question
The spring constant of a spring balance is . It is initially stretched by 5 cm from the unstretched position. Then the work done to stretch it further by another 10 cm is
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


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Question number: 412
» Properties of Solids & Liquids » Elastic Behavior
Question
A wire has length 1.5 m and radius 1.5 mm and another wire has length 4.5 m and radius 4.5 mm. Both are fixed at one end and twisted at other end. Calculate the ratio of couples required to twist the wires through the same angle. The wires are made of the same material.
Choices
Choice (4)  Response  

a. 


b. 


c.  27 

d. 


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Question number: 413
» Communication System » Sky and Space Wave Propagation
Question
For sky wave propagation of a 14 MHz signal, what should be the minimum electron density in ionosphere –
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


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