A strip of pure silicon is warmed from room temperature to 100 °C while its resistance is monitored, and the resistance drops. Read the Assertion (A) and Reason (R) and choose the correct option.

Assertion (A): The electrical conductivity of an intrinsic semiconductor increases as its temperature rises.
Reason (R): Thermal energy breaks more covalent bonds, lifting electrons into the conduction band and creating an equal number of holes.

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A strip of pure silicon is warmed from room temperature to 100 °C while its resistance is monitored, and the resistance drops. Read the Assertion (A) and Reason (R) and choose the correct option.

More NEET Physics chapters

Practising is step one. Knowing what to practise next is the hard part.

Practising is step one. Knowing what to practise next is the hard part