The answer to this question would be B (the battery is the electrical power supply)
The radius of an atom can not be measured directly sir. So false
Answer:
The angle between the electric field and the axis of the filter is 54⁰
Explanation:
Apply the equation for intensity of light through a polarizer.

where;
I is the intensity of the transmitted light
I₀ is the intensity of the incident light
θ is the incident angle
If only 35 % of the intensity of a polarized light wave passes through a polarizing filter, then the ratio of the intensity of the transmitted light to that of the intensity of the incident light is given by;

Therefore, the angle between the electric field and the axis of the filter is 54⁰
Answer:
Θ
Θ
Θ = 
Explanation:
Applying the law of conservation of momentum, we have:
Δ

Θ (Equation 1)
Δ

Θ (Equation 2)
From Equation 1:
Θ
From Equation 2:
sinΘ = 

Replacing Equation 3 in Equation 4:


Θ (Equation 5)
And we found Θ from the Equation 5:
tanΘ=
Θ=
To solve this problem we will resort to the concept of angle of incidence and refraction.
Since it is a reflection on a mirror, the angle provided for refraction will be equal to that of the incidence, that is, 25 °
The angle of reflation is always perpendicular to the surface so it is necessary to find the angle with respect to it.


Therefore the angle of the reflected beam of light made with the surface normal is 65°