AIIMS 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.  6 

b.  4 

c.  2 

d.  8 

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.  1.0m 

b.  0.9 m 

c.  0.8 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. 

