Assertion (A): Lenz's law is a violation of the law of conservation of energy
Reason (R): Induced emf always oppose the change in magnetic flux that has produced them

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

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

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A is false, R is false

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A is false but R is true.

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Solution

The correct option is D A is false but R is true.
Lenz law is in accordance with the law of conversation of energy. By Lenz law induced emf always oppose the change in magnetic flux that has produced them.

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DIRECTIONS (Qs. 52 AND 53): The following item consist of two statements: one labelled as the Assertion a) and the other as Reason (R). You are to examine these two statements carefully and select the answers to these items using the codes given below:

a) Both A and R are individually true but R is the correct explanation of A

b) Both A and R are individually true but R is not the correct explanation of A

c) A is true but R is false

d) Both A and R are false

53. Assertion a): Saluva Narasimha put an end to the old dynasty and assumed the royal title.

Reason

(R): He wanted to save the kingdom from further degeneration and disintegration. [2003]

a) Both A and R are individually true but R is the correct explanation of A

b) Both A and R are individually true but R is not the correct explanation of A

c) A is true but R is false

d) Both A and R are false

52. Assertion a): Shah Alam II spent the initial years as an emperor far away from his capital.

Reason

(R): There was always a lurking danger of foreign invasion from the north-west frontier. [2003]

Q. Assertion: 3 + 7 = 9 is a statement.
Reason: A sentence that can be judged to be true or false, but not both, is called a statement.
(a) Both Assertion and Reason are true and Reason is a correct explanation of Assertion.
(b) Both Assertion and Reason are true but Reason is not a correct explanation of Assertion.
(c) Assertion is true and Reason is false.
(d) Assertion is false and Reason is true.

Q. Assertion: A cyclic parallelogram is a square.
Reason: Diameter is the largest chord in a circle.
(a) Both Assertion and Reason are true and Reason is a correct explanation of Assertion.
(b) Both Assertion and Reason are true but Reason is not a correct explanation of Assertion.
(c) Assertion is true and Reason is false.
(d) Assertion is false and Reason is true.

Q. (i)
Assertion: A circle is not a rectilinear figure.
Reason: A figure formed by straight lines only is called a rectilinear figure.
(a) Both Assertion and Reason are true and Reason is a correct explanation of Assertion.
(b) Both Assertion and Reason are true but Reason is not a correct explanation of Assertion.
(c) Assertion is true and Reason is false.
(d) Assertion is false and Reason is true.
(ii)
Assertion: All right angles are equal to one another.
Reason: A unique line passes through a single point.
(a) Both Assertion and Reason are true and Reason is a correct explanation of Assertion.
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(d) Assertion is false and Reason is true.

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Assertion (A): Lenz's law is a violation of the law of conservation of energyReason (R): Induced emf always oppose the change in magnetic flux that has produced them

The correct option is D A is false but R is true.Lenz law is in accordance with the law of conversation of energy. By Lenz law induced emf always oppose the change in magnetic flux that has produced them.

Assertion (A): Lenz's law is a violation of the law of conservation of energy
Reason (R): Induced emf always oppose the change in magnetic flux that has produced them

The correct option is D A is false but R is true.
Lenz law is in accordance with the law of conversation of energy. By Lenz law induced emf always oppose the change in magnetic flux that has produced them.