# Doubt from Physics

I can’t imagine it properly why infinite is not correct

I know Q8 is quite easy but I am not getting none of the options
Q9 me toh idea hi nahi mil raha

@Binod , @Sanjay_S , @Rudra_d

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Sending solution in a min.

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For 15.

Kinetic energy can decrease for some time but it will always increase later on. And graph will be like a parabola.

B is possibile when you throw a charge against electric field.
C is possible if charge is just released
D is possible if you throw perpendicular to electric field ( initially y axis me KE hai and x me velocity jitna badega utna add up hoga.)

I’ll send a detailed analysis about the scenario tomorrow. You’ll understand much much much better.

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Question 9
The c×V force is perpendicular to velocity always so it will do 0 work. Only electric field does work. And I used work energy theorem.

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Guys you upload solutions too fast

My clumsy hands cannot keep up

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@Lavesh aram se bhejo me aur nahi bhejne wala… all yours

Pictures sahi kar lo.

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Bro apke question 15 ke solution me kuch galtiya hai… zyada nahi… ap mathematically nahi kiye isiliye ho gaya shayad.

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Ye conducting non conducting ke karan hamesa galat ho jata hai​:triumph:

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Haan maine analyse karke bana diya. Galat kya hh vaise?

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Yeah some guys are just perfect with emojis

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Mai bhi bohot aalsi hu phone ghuma raha hu kab se
@Binod bro 18 bach gaya

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Second wala. Tumhara parabola ka vertex kya y axis pe hai? Fir galat hai. Nahi to its all right.

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Min K.E. toh t = 0 pe hi hogi na? Haan vertex y-axis pe hh.

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Q.18 me thermal energy will be change in potential energy of system. Toh initial potential energy calculate karenge (self energy + interaction potential energy) and final potential energy calculate karenge (self energy + interaction potential energy) and then subtract. Iska ham solution nahi likhe.

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Ha bro min to wahi hoga par vertex waha pe nahi hoga.