NEET
- Exam
- NEET
- Subject
- Physics
- Chapter
- Experimental Physics
NEET · Physics · Experimental Physics
Assertion (A): A meter-bridge works on the principle of wheatstone...
Assertion (A): A meter-bridge works on the principle of wheatstone bridge.
Reason (R): The drift velocity of electrons in a metallic wire is very high.
Options
- AIf both assertion and reason are true and reason is the correct explanation of the assertion.
- BIf both assertion and reason are true but reason is not correct explanation of the assertion.
- CIf assertion is true, but reason is false.
- DAssertion is false, reason is true
Correct answer
C. If assertion is true, but reason is false.
Step-by-step solution
- Assertion (A): "A meter bridge works on the principle of Wheatstone bridge." True the meter bridge is simply a practical form of Wheatstone bridge used to compare resistances.
- Reason (R): "The drift velocity of electrons in a metallic wire is very high." False drift velocity in conductors is actually very small (typically of the order of mm/s), not high.
Hence is true and is false (\rightarrow) option (3).