AIIMS Physics: Questions 259  263 of 500
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Question number: 259
» Electromagnetic Induction & Alternating Currents » Self and Mutual Inductance
Question
The current passing through a choke coil of 12 H is decreasing at the rate of. The emf developing across the coil is –
Choices
Choice (4)  Response  

a.  6 V 

b.  – 6 V 

c.  12 V 

d.  – 12 V 

Question number: 260
» Kinematics » Projectile Motion
Question
The velocity of projection of an oblique projectile is The horizontal range of the projectile is –
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


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.  3: 1 

c.  1: 2 

d.  2: 1 

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.  62.4 cm 

b.  57.1 cm 

c.  65 cm 

d.  72.3 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. 

