Assertion (A) : When small holes are made in the body of the magnet, its magnetic moment decreases
Reason (R) : For a magnet Intensity of magnetisation remains constant and on making holes, magnetised volume decreases, hence magnetic moment decreases

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

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

Both A and R are true and R is not correct explanation of A

No worries! We‘ve got your back. Try BYJU‘S free classes today!

A is true, but R is false

No worries! We‘ve got your back. Try BYJU‘S free classes today!

A is false, but R is true

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is A Both A and R are true and R is the correct explanation of A
The reason explains the assertion.

Suggest Corrections

Similar questions

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.
(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.

In the following questions a statement of assertion (A) followed by a statement of reason (R) is given. Choose the correct answer out of the following choices.
(a) Assertion and reason both are true, reason is correct explanation of assertion.
(b) Assertion and reason both are true but reason is not the correct explanation of assertion.
(c) Assertion is true, reason is false.
(d) Assertion is false, reason is true.

Assertion (A) $[F e (C N)_{6}]^{3 -}$ ion shows magnetic moment corresponding to two unpaired electrons.
Reason (R) Because it has $d^{2} s p^{3}$ type hybridisation.

Assertion: A proton and an $α$ - particle are projected with the same kinetic energy at right angle to a uniform magnetic field, then the $α$ - particle will move along a circular path of smaller radius than the proton.

Reason : $B q v = \frac{m v^{2}}{r}$ holds good for the charged particle moving in a circular path in a uniform magnetic field.

Choose the most appropriate correct option:

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. 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.

Join BYJU'S Learning Program

Assertion (A) : When small holes are made in the body of the magnet, its magnetic moment decreases Reason (R) : For a magnet Intensity of magnetisation remains constant and on making holes, magnetised volume decreases, hence magnetic moment decreases

The correct option is A Both A and R are true and R is the correct explanation of AThe reason explains the assertion.

Assertion (A) : When small holes are made in the body of the magnet, its magnetic moment decreases
Reason (R) : For a magnet Intensity of magnetisation remains constant and on making holes, magnetised volume decreases, hence magnetic moment decreases

The correct option is A Both A and R are true and R is the correct explanation of A
The reason explains the assertion.