AIIMS (All India Institute of Medical Sciences) Physics: Questions 405  410 of 500
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Question number: 405
» Rotational Motion » Radius of Gyration
Question
The angular velocity of a body changes from to without applying torque but by changing moment of inertia. The ratio of initial radius of gyration to the final radius of gyration is –
Choices
Choice (4)  Response  

a. 
 
b. 
 
c. 
 
d.  2 
Question number: 406
» Gravitation » Gravitational Acceleration
Question
It the radius of the earth is reduced by 2 %, keeping the mass unchanged, what will be the change in acceleration due to gravity at the surface of the earth?
Choices
Choice (4)  Response  

a.  4  
b.  8  
c.  2  
d.  6 
Question number: 407
» Electromagnetic Induction & Alternating Currents » Reactance and Impedance
Question
The reactance of an inductance of 0.07 H is . Than the frequency of a. c is –
Choices
Choice (4)  Response  

a. 
 
b. 
 
c. 
 
d. 

Question number: 408
» Laws of Motion » Law of Conservation of Linear Momentum
Question
A gun of weight of 15 kg fires a shot of 0.5 g with a velocity . Velocity of recoil gun is: 
Choices
Choice (4)  Response  

a. 
 
b. 
 
c. 
 
d. 

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.  0.8 m  
b.  1.0m  
c.  0.9 m  
d.  0.5 m 
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. 
