AIIMS (All India Institute of Medical Sciences) Physics: Questions 261  265 of 500
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Question number: 261
» Electrostatics » Conductors and Insulators
Question
A conducting sphere of radius 20 cm is charged with . Another uncharged sphere of radius 60 cm is allowed to touch it for some time. After that if the sphere are separated, then surface density of charged on the spheres will be in the ratio of:
Choices
Choice (4)  Response  

a.  1: 3  
b.  2: 1  
c.  3: 1  
d.  1: 2 
Question number: 262
» Oscillations and Waves » Standing Waves in Strings and Organ Pipes
Question
A string in a musical instrument is 80 cm long and its fundamental frequency is 1000 Hz. If a frequency of 1400 Hz is to be produced, then required length of string is –
Choices
Choice (4)  Response  

a.  72.3 cm  
b.  65 cm  
c.  62.4 cm  
d.  57.1 cm 
Question number: 263
» Gravitation » Kepler's Laws of Planetary Motion
Question
The distance of two planets from the sun are in the ratio 3: 1. Assuming that they are moving in circular orbits, what will be the ratio of their time periods?
Choices
Choice (4)  Response  

a. 
 
b. 
 
c. 
 
d. 

Question number: 264
» Properties of Solids & Liquids » Elastic Behavior
Question
Find the elastic potential energy of water at depth of 800 m. Compressibility of water is , density of water ,
Choices
Choice (4)  Response  

a. 
 
b. 
 
c. 
 
d. 

Question number: 265
» Properties of Solids & Liquids » Viscosity
Question
Calculate the volume of water flowing in 20 minute through a horizontal tube of 0.4 cm diameter, 80 cm long. The pressure head across the ends of the tube is 30 cm of water column. Coefficient of viscosity of water is S. I. units .
Choices
Choice (4)  Response  

a. 
 
b. 
 
c. 
 
d. 
