Question
For two statements are given-one labelled Assertion (A) and the other labelled Reason (R). Select the correct answer to these questions from the codes (a), (b), (c) and (d) as given below.
  1. Both A and R are true, and R is the correct explanation of A.
  2. Both A and R are true, but R is not the correct explanation of A.
  3. A is true, but R is false.
  4. A is false, and R is also false.
Assertion (A): Lines of force are perpendicular to conductor surface.
Reason (R): Generally electric field is perpendicular to equipotential surface.

Answer

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

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For two statements are given-one labelled Assertion (A) and the other labelled Reason (R). Select the correct answer to these questions from the codes (a), (b), (c) and (d) as given below.
  1. Both A and R are true and R is the correct explanation of A.
  2. Both A and R are true but R is not the correct explanation of A.
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Assertion: Long distance transmission of A.C. is carried out at extremely high voltage.
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Assertion (A): Light added to light can produce darkness.
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For question two statements are given-one labelled Assertion (A) and the other labelled Reason (R). Select the correct answer to these questions from the codes (a), (b), (c) and (d) as given below.
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For question two statements are given-one labelled Assertion (A) and the other labelled Reason (R). Select the correct answer to these questions front the codes (a), (b), (c) and (d) as given below.
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Assertion: Magnetic force is always perpendicular to the magnetic field.
Reason: Electric force is along the direction of electric field.
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For question two statements are given-one labelled Assertion $(A) $ and the other labelled Reason $(R).$ Select the correct answer to these questions from the codes $(a), (b), (c)$ and $(d)$ as given below. Assertion $(A)$: Two point coherent sources of light $S_1$ and $S_2$ are placed on a line as shown. $ P$ and $Q$ are two points on that line. If at point $P$ maximum intensity is observed then maximum intensity should also be observed at $Q$.

Reason $(R)$: In the figure of assertion the distance $|S_1P - S_2P|$ is equal to distance $|S_2Q- S_1Q|.$
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Assertion (A): Electrons in the atom are held due to coulomb forces.
Reason (R): The atom is stable only because the centripetal force due to Coulomb's law is balanced by the centrifugal force.