A convex lens with focal length 9 cm forms an image of an object placed 21 cm to the left of the lens. what is the distance to t
1 answer:
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Answer:
The magnitude of the electric field in the second case will be of the electric field in the first case
Explanation:
The electric field at a distance < R from the center of the sphere is given by
the formula =
where R is the radius of the sphere, and, Q is the charge uniformly distributed on the sphere.
It is given that the same charge Q is distributed uniformly throughout a sphere of radius 2R and we have to find the electric field at same distance from the center.
In the second case the electric field will be given by
=
Therefore the magnitude of the electric field in the second case will be of the electric field in the first case.
Explanation:
The acceleration of a body is defined as the rate of change of velocity per unit time. Its mathematical form is given by :
Here,
u is initial speed of a body
v is final speed
t is time taken
Uniform acceleration means that the velocity of an object changes by an equal amount in every equal time period. Hence, the correct option is (c) " Its velocity increases by increasing amounts in equal time intervals".