Warda Khan on Nearpeer MDCAT Common Room
As Salam mualikum any please explain this .. The sum of the magnitude of two vectors is 10 ,and the magnitude of their resultant is 8 . If the resultant is perpendicular to the smaller vector, the magnitude of two vectors are : A) 3 and 7 b) 6 and 4 C) 2 and 8 D)5 and 5
Warda Khan · 2026-08-05T13:10:14.909Z
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Kashaf Zareen · 2026-08-05T13:15:24.964Z
is it c
Muniba Naveed · 2026-08-05T13:43:26.590Z
The correct option is C Try to conclude the statement as Let two vectors a and b then sum of magnitude of 2 vectors a+b=10 and magnitude of resultant is underroot a2+b2 then insert all values of all options one by one like underroot 3^2+7^2 gives underoot 58 =7.6 then find underoot 2^2+8^2 gives8.2 that is close to magnitude of resultant 8,so thats the correct option all the other options give less answer
Muniba Naveed · 2026-08-05T13:47:40.226Z
Actually ,this is my method of solving .It is correct when the resultant is perpendicular to the vectors .it does not hold if the vectors are parallel or anti parallel.if u want to know the real method let me know
Warda Khan · 2026-08-05T13:49:41.249Z
No it's ok thank you 😊
Khan Khan · 2026-08-05T13:08:29.683Z
Muje to ye hud b nhi araha ha