507 - Questions Answers

Dear Sir kindly help provide the correct approach and solution to solve this 2016 iit jee advanced rotational question. 

Two approaches

For angular velocity about z axis there are two approaches in solutions available in books , internet , first one considering spin angular velocity and revolution angular velocity about z axis itself ; second one considering spin angular velocity and revolution angular velocity perpendicular to rod through O and then calculating angular velocity about z axis  taking cosine component of revolution angular velocity. 

May refer 2nd picture attached. 

Question 
Asked By: RK GUPTA
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An electron originates at a point A lying on the axis of a straight solenoid and moves with a velocity v at an angle α to the axis. The magnetic induction of the field is B. Find the distance r from the axis to the point on the screen into which the electron strikes. The screen is oriented at right angles to the axis and is located at a distance l from the point A.

 

Thanks in advance sir.

Asked By: PRABHAN BUGATHA
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Dear Sir kindly help solve
Asked By: RK GUPTA
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Joshi sir comment
Dear Sir kindly help provide the solution 
Asked By: RK GUPTA
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Joshi sir comment
Dear Sir kindly help provide the solution along with right approach to solve such questions 

Dear Sir kindly help provide the solution along with right approach to solve such questions 

Asked By: RK GUPTA
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Joshi sir comment
Dear Sir kindly help provide the solution along with right approach to solve such questions 
Asked By: RK GUPTA
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Joshi sir comment
Answer in lower image .Dear Sir,Kindly help solve.
Asked By: RK GUPTA
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Joshi sir comment

 

Sir pls solve above 3 questions pls sir
Asked By: KANDUKURI ASHISH
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Asked By: PARTHSARTHY
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Joshi sir comment

On a horizontal floor, two identical cylindrical vessels A and B connected by a thin tube near their bottoms contain some water. When an ice block of volume 100cm^3 is gently put inside the vessel A, it gets half submerged in the water. How much mass of water will flow through the connecting tube during the process of melting of the ice cube? (Density of water=1000kg/m^3 and Density of ice=900kg/m^3)

Asked By: PARTHSARTHY
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