AIIMS (All India Institute of Medical Sciences) Physics: Questions 403  408 of 500
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Question number: 403
» Electronic Devices » Semiconductor Diode
Appeared in Year: 2004
Question
A Ge specimen is doped with Al. The concentration of acceptor atoms Given that the intrinsic concentration of electron – hole pairs is, the concentration of electrons in the specimen is –
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


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Question number: 404
» Kinematics » Projectile Motion
Question
The velocity of projection of a body is given by . The ratio of horizontal range to maximum height is
Choices
Choice (4)  Response  

a.  3 

b.  2 

c.  6 

d.  4 

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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 

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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 

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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. 


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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. 


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