Question

Given below are two statements, one is labelled as Assertion A and the other is labelled as Reason R
Assertion (A): A bird perches on a high power line and nothing happens to the bird.
Reason (R): The level of bird is very high from the ground.
In the light of the above statements, choose the correct answer from the options given below

• A. If both assertion and reason are true and reason is the correct explanation of assertion
• B. If both assertion and reason are true but reason is not the correct explanation of assertion
• C. If assertion is true but reason is false
• D. If both assertion and reason are false

Answer 1

The Correct Option is C

Electric shock is due to the electric current flowing through a living body. When the bird perches on a single high power line, no current passes through its body because its body is at equipotential surface i.e., there is no potential difference. While when man touches the same line, standing bare foot on ground the electrical circuit is completed through the ground. The hands of man are at high potential and his feets are at low potential. Hence large amount of current flows through the body of the man and person therefore gets a fatal shock.

Answer 2

The correct answer would be: Assertion A is true, but Reason R is not a correct explanation for Assertion A.

Explanation:
Birds often perch on high power lines without any harm, and Assertion A is true.
However, the Reason R provided is not a correct explanation for Assertion A. The height of the bird from the ground does not explain why it does not get harmed by the high voltage in the power line. The reason why birds do not get electrocuted is due to the fact that they only come into contact with one wire at a time, and so there is no current flowing through their body. The voltage difference between the two wires is what causes the electric current to flow through the wire, and not the distance of the bird from the ground.
Therefore, Reason R is incorrect.