Assertion (A) & Reason (B) MCQ

MCQ 11 Mark

Assertion (A) :A step-up transformer cannot be used as a step-down transformer.
Reason (R): A transformer works only in one direction.

A
Both A and R are true and R is the correct explanation of A
B
Both A and R are true but R is not the correct explanation of A.Empty
C
A is true but R is false.
D
A is false but R is true

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MCQ 21 Mark

Assertion (A) : Light added to light can produce darkness.
Reason (B) : When two coherent light waves interfere, there is darkness at position of destructive interference.

A
Both A and R are true and R is the correct explanation of A.
B
Both A and R are true but R is not the correct explanation of A
C
A is true but R is false.
D
A is false but R is trueEmpty

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MCQ 31 Mark

Assertion : For a charged particle moving from point P to point Q, the net work done by an electrostatic field on the particle is independent of the path connecting point P to point Q.
Reason : The net work done by a conservative force on an object moving along a closed loop is zero.

A
Assertion and reason both are correct statements and reason is correct explanation for assertion.
B
Assertion and reason both are correct statements but reason is not correct explanation for assertion.
C
Assertion is correct statement but reason is wrong statement.
D
Assertion is wrong statement but reason is correct statement.

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MCQ 41 Mark

Assertion (A): The photoelectrons produced by a monochromatic light beam incident on a metal surface, have a spread in their kinetic energies.
Reason (R): The work function of the metal varies as a function of depth from the surface

A
Both A and R are true and R is the correct explanation of A
B
Both A and R are true but R is not the correct explanation of A.
C
A is true but R is false.
D
A is false but R is true.

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Physics Assertion (A) & Reason (B) MCQ

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