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Magnets can exert a push or pull on obje...

Magnets can exert a push or pull on objects without making contact with them.

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Knowledge Check

  • Assertion: If an object is submerged in fluid at rest, the fluid exerts a force on its surface. Reason: The force exerted by the fluid at rest has to be parallel to the surface in contact with it.

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

  • Assertion : Insert electrolytes like KCl, KNO_(3) are used in salt bridge. Reason : Salt bridge provides an electric contact between the two solutions without allowing them to mix with each other.

    A
    If both assertion and reason are true and reason is the correct explanation of assertion.
    B
    If both assertion and reason are true but reason is not the correct explanation of assertion.
    C
    If assertion is true but reason is false.
    D
    If both assertion and reason are false.

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