Question

Q8. (a) State Ohm's law and condition under which
it holds. What does slope of I-V graph represent
(b) Focal length of convex lens is 25cm. It is cut into two equal halves along its principal axis.
What will be focal length of each half.​

Answer 1

Answer:

a) Ohm's law, description of the relationship between current, voltage, and resistance. The amount of steady current through a large number of materials is directly proportional to the potential difference, or voltage, across the materials.

Ohm's law of current electricity states that the current flowing in a conductor is directly proportional to the potential difference across its ends provided the physical conditions and temperature of the conductor remains constant. where V= voltage, I= current and R= resistance.

In IV graph, Current is at y-axis and potential is at x-axis. The reciprocal of the slope of IV graph shows the resistance.

Answer 2

Answer:

A) OHM LAW STATES THAT POTENTIAL DIFFERENCE OF A SUBSTANCE IS DIRECTLY PROPORTIONAL TO THE AMOUNT OF ELECTRIC CURRENT PASSING THROUGH THE CONDUCTORS IRRESPECTIVE OF TEMPERATURE AND PHYSICAL CONDITIONS . IV GRAPH SLOPE SAYS THAT ELECTRIC CURRENT IS DIRECTLY PROPORTIONAL TO THE POTENTIAL DIFFERENCE.

B). FOCAL LENGTH WILL BE 25 CM.

MARK AS BRAINLIEST........:))