Answer:
Explanation:
Given charges are:
The electric potential energy of a charge due to the electric field of another charge is given by
where,
- k = Coulomb's constant, having value =
- r = distance between the charges.
When the charges are infinite distance apart, 
,
When the charges are 
apart, 
,
Here, e is the charge on one electron, such that, 
.
Therefore,
Thus,
As it is outside the focal point it must be real.Real images must be inverted.
As it is beyond the centre of curvature it is also beyond 2F which means that the image is inside the centre of curvature ( between F and 2F from the mirror ) As the image is closer to the mirror than the object it must be diminished in size.
Hope this helps you :)
Answer:
Positive sign for negative velocity and minus sing for positive velocity
Explanation:
In the case of the negative velocity, the sign of the acceleration that reduces its magnitude is the positive sign, since being in the opposite direction to the movement indicates a deceleration or braking. In the case of the positive velocity, the sign of the acceleration that reduces its magnitude is the negative sign, since being in the opposite direction to the movement indicates a deceleration or braking. We observe that there will always be a reduction in the magnitude of the velocity if the acceleration goes in the opposite direction.
