Given below are two statements one is labelled as
Assertion A and the other is labelled as Reason R
Assertion A : A spherical body of radius (5 ± 0.1)
mm having a particular density is falling through a
liquid of constant density. The percentage error in
the calculation of its terminal velocity is 4%.
Reason R : The terminal velocity of the spherical
body falling through the liquid is inversely
proportional to its radius.
In the light of the above statements, choose the
correct answer from the options given below
(1) Both A and R are true but R is NOT the correct explanation of A
(2) Both A and R are true and R is the correct explanation of A
(3) A is false but R is true
(4) A is true but R is false
(2) Both A and R are true and R is the correct explanation of A
(3) A is false but R is true
(4) A is true but R is false
JEE-2024
Solution:
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The magnetic field at the centre of a wire loop formed by two semi circular wires of radii R1 = 2 πm and R2 = 4π m carrying current I = 4A as per figure given below is a × 10^–7 T. The value of a is ______. (Centre O is common for all segments)
