JEE Main PYQs on The Angular Momentum: JEE Main Questions for Practice with Solutions

JEE Main Questions

• 1.

  A force \( \vec{f} = x^2 \hat{i} + y \hat{j} + y^2 \hat{k} \) acts on a particle in a plane \( x + y = 10 \). The work done by this force during a displacement from \( (0,0) \) to \( (4m, 2m) \) is              Joules (round off to the nearest integer).

  View Solution

  ---

• 2.

  The velocity-time graph of an object moving along a straight line is shown in the figure. What is the distance covered by the object between \( t = 0 \) to \( t = 4s \)? 
  
  
   

  • 13 m
    
  • 30 m
    
  • 11 m
    
  • 10 m
    
  View Solution

  ---

• 3.

  The value of current \( I \) in the electrical circuit as given below, when the potential at \( A \) is equal to the potential at \( B \), will be ________________________ A.
  

  

  • \( 1.0 \)
    
  • \( 2.0 \)
    
  • \( 0.5 \)
    
  • \( 4.0 \)
    
  View Solution

  ---

• 4.

  A galvanometer having a coil of resistance 30 \( \Omega \) needs 20 mA of current for full-scale deflection. If a maximum current of 3 A is to be measured using this galvanometer, the resistance of the shunt to be added to the galvanometer should be \( X \, \Omega \), where \( X \) is:

  • 447
  • 298
  • 149
  • 596
  View Solution

  ---

• 5.

  A bar magnet has total length \( 2l = 20 \) units and the field point \( P \) is at a distance \( d = 10 \) units from the centre of the magnet. If the relative uncertainty of length measurement is 1%, then the uncertainty of the magnetic field at point P is:
  

  

  • 10%
    
  • 4%
    
  • 5%
    
  • 3%
    
  View Solution

  ---

• 6.

  Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R). 
  Assertion (A) : If Young’s double slit experiment is performed in an optically denser medium than air, then the consecutive fringes come closer. 
  Reason (R) : The speed of light reduces in an optically denser medium than air while its frequency does not change. 
  In the light of the above statements, choose the most appropriate answer from the options given below :

  • Both (A) and (R) are true and (R) is the correct explanation of (A)
    
  • (A) is false but (R) is true.
    
  • Both (A) and (R) are true but (R) is not the correct explanation of (A)
    
  • (A) is true but (R) is false.
    
  View Solution