Question

(I) both A and R are true an R is the correct explantion of A.
(ii) both A and R are true and R is not the correct explanation of A.
(iii) A is true but R is false.
(iv) A is false but R is true.
Assertion: the wings of a bird push air downwards and the air must be pushing the bird upward.
Reason: for every action there is an equal reaction in the same direction.​

Answer 1

Answer:

(I) both A and R are true an R is the correct explantion of A

as Newton's third law is: For every action, there is an equal and opposite reaction.

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Answer 2

Answer:

option (c) is correct

A is true but R is false.

Explanation:

option (c) is correct

A is true but R is false.

Wings are one of the aerodynamic adaptations of the birds. Birds flap their wings downwards exerting force; the resulting reaction is the air pushing the bird upwards. This is an example of Newton's third law.

According to newton's third law, for every action there is an equal and opposite reaction.

option (a) is incorrect

Both A and R are true and R is the correct explanation of A.

The action-reaction forces of interacting objects are of equal magnitude but are in opposite directions.

option (b) is incorrect

Both A and R are true but R is not the correct explanation of A.

The third law of Newton states that to every action there is an equal and opposite reaction. The forces exerted by an object on another will be exerted back by the other object.

option (d) is incorrect

A is false but R is true.

In an interaction between 2 objects, there occurs a pair of forces that exerl and act on the 2 objects. Both these forces will be of equal magnitude only differing in direction.

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