KVPY Stream SBSX (Class 12 & 1st Year B.Sc.) Physics: Questions 103  105 of 268
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Question number: 103
» Electrostatics » Equipotential Surfaces
Appeared in Year: 2012
Question
Consider three concentric metallic spheres A, B and C of radii a, b, c respectively where. A and B are connected whereas C is grounded. The potential of the middle sphere B is raised to V then the charge on the sphere C is –
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 104
» Work, Energy and Power » Conservation of Mechanical Energy
Appeared in Year: 2013
Question
A point particle of mass 0.5 kg is moving along the xaxis under a force described by the potential energy V shown below. It is projected towards the right from the origin with a speed v. What is the minimum value of v for which the particle will escape infinitely far away from the origin?
Choices
Choice (4)  Response  

a. 


b. 


c. 


d.  All of the above 

Question number: 105
» Oscillations and Waves » Doppler Effect in Sound
Appeared in Year: 2014
Question
A whistle emitting a loud sound of frequency 540 Hz is whirled in a horizontal circle of radius 2 m and at a constant angular speed of 15 rad/s. The speed of sound is 330 m/s. The ratio of the highest to the lowest frequency heard by a listener standing at rest at a large distance from the center of the circle is –
Choices
Choice (4)  Response  

a.  1.1 

b.  1.2 

c.  1.4 

d.  1.0 
