The most common type of mirage is an illusion that light from faraway objects seem to be reflected by a pool of water that is no
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Answer:
a)μΩ
b)
c)Ω
here * stand for multiplication
Explanation:
length of cylinder = 1.5 m
radius of cylinder = 1.1 cm
resistivity depends on the distance x from the left
............(i)
using equation
let dR is the resistance of thickness dx
where p(x) is resistivity l is length
a is area
.........................(2)
after integration
...............(3)
it is given Ωm
=
Ωm
(here * stand for multiplication )
on solving we get
Ωm
put each value of a and b and r value in equation 3rd we get
Ω
μΩ
FOR (b)
for mid point x = L/2
E = p(x)L
for x = L/2
for given current I = 1.75 A
so electric field
by substitute the values
we get;
(here * stand for multiplication )
c ).
75 cm means length will be half
that is x = L/2
integrate the second equation with upper limit L/2
Let resistance is
so after integration we get
substitute the value of a , b and L we get
Ω
for second half resistance
Ω
(here * stand for multiplication )
Answer:
Explanation:
You can consider that the force that acts over the proton is the same to the force over the electron. This is because the electric force is given by:
where E is the constant electric field between the parallel plates, and is the same for both electron and proton. Also, the charge is the same.
by using the Newton second law for the proton, and by using kinematic equation for the calculation of the acceleration you can obtain:
(it has been used that vp^2 = v_o^2+2ad) where d is the separation of the plates, ap the acceleration of the proton, vp its velocity and mp its mass.
By doing the same for the electron you obtain:
we can equals these expressions for both proton and electron, because the forces qE are the same: