A blacksmith hammers a hot piece of iron while making a tool.How does the force due to hammering affect the piece of iron ?

A blacksmith hammers a hot piece of iron while making a tool . How does the force due to hammers affect the piece of irohn?

How can a magnetised piece of iron be demagnetised?

Direction. In the following questions, a statement of assertion is followed by a statement of reason. While answering a question, you are required to choose the correct are out of the given four responses and mark it as (A)If both assertion and reason are true and reason is the correct explanation of the assertion, (B) if both assertion and reason are true but reason is not correct explanation of the assertion. (C) if assertion is true, but reason if false, (D) if both assertion and reason are false Assertion : Soft iron is preferred for making electromagnets. Reason : Owing to low value of retentivitiy, the residual magnetism left in the soft iron is very small, when the current is switched off.

Direction. In the follwing questions, a statement of assertion is followed by a statement of reason. While answering a question, you are required to choose the correct are out of the given four responses and mark it as (A). If both assertion and reason are true and reason is the correct explanation of the assertion, (B) if both assertion and reason are true but reason is not correct explanation of the assertion. (C) if asssertion is true, but reason if false, (D) if both assertion and reason are false Assertion : Steel is preferred for making permanent magnets, althoguh soft iron can be easily magnetised. rEason : It is because, coercivity for steel is quite large as compared to soft iron.

Direction. In the follwing questions, a statement of assertion is followed by a statement of reason. While answering a question, you are required to choose the correct are out of the given four responses and mark it as (A). If both assertion and reason are true and reason is the correct explanation of the assertion, (B) if both assertion and reason are true but reason is not correct explanation of the assertion. (C) if asssertion is true, but reason if false, (D) if both assertion and reason are false Assertion : The energy of a charged particle does not change, when it moves inside the magnetic field. Reason: It is because, force on the charged particle due to the magnetic field acts perpendicular to its path.

Calculate the number of iron atoms in a piece of iron weighing 2.8g

Why are all pieces of iron not magnet even though iron is a ferromagnetic material?