NEET (NTA)National Eligibility cum Entrance Test (Medical) Physics: Questions 267  270 of 2320
Access detailed explanations (illustrated with images and videos) to 2320 questions. Access all new questions we will add tracking exampattern and syllabus changes. Unlimited Access for Unlimited Time!
View Sample Explanation or View Features.
Rs. 600.00 or
How to register?
Question number: 267
» Electrostatics » Electrostatic Potential Energy
Question
Two charges q _{1} and q _{2} are placed 30 cm apart, shown in the figure. A third charge q _{3} is moved along the arc of a circle of radius 40 cm from C to D. The change in the electrostatic potential energy of the system is . What will be P?
Choices
Choice (4)  Response  

a.  8 q _{1}  
b.  6 q _{1}  
c.  6q _{2}  
d.  8 q _{2} 
Question number: 268
» Electrostatics » Electric Charges
Question
the magnitude of electric field intensity E is such that, when an electron placed in it, electron would experience an electrical force is equal to its weight is given by mg. So, what is the magnitude of this electric field?
Choices
Choice (4)  Response  

a. 
 
b. 
 
c. 
 
d. 

Question number: 269
» Kinematics » Average Speed and Instantaneous Velocity
Question
A lady is walking on a level road at a speed of 8 km/h. Raindrops fall vertically with a speed of 6 km/h. Find the velocity of raindrops with respect to the men.
Choices
Choice (4)  Response  

a.  4 km/hr  
b.  3 km/hr  
c.  10 km/hr  
d.  7 km/hr 
Question number: 270
Question
A parallel plate capacitor is charged to a potential. difference of 50V. It is discharged through a resistance. After 1 second, the potential difference between plates becomes 40V. Then
Choices
Choice (4)  Response  

a.  Potential difference between the plates after 2 seconds will be 20 V  
b.  Fraction of stored energy after 1 second is 4/5  
c.  Potential difference between the plates after 2 seconds will be 30V  
d.  Fraction of stored energy after 1 second is 16/25 