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JEE Physics - MCQ Practice Questions

Practice free JEE Physics multiple-choice questions with detailed answers and explanations. Perfect for competitive exam preparation.

900 questions | 100% Free

Q.21Hard

Heterojunctions (like AlGaAs/GaAs) provide advantages over homojunctions primarily because:

Q.22Hard

In a Zener diode, breakdown voltage is primarily determined by:

Q.23Hard

In a tunnel diode, the negative resistance region occurs due to:

Q.24Hard

The transconductance parameter μ_n × C_ox in a MOSFET depends on:

Q.25Hard

In FinFET technology (used in modern 7nm and 5nm nodes), multiple gates are used to:

Q.26Hard

In a CMOS inverter circuit, the propagation delay is minimized when:

Q.27Hard

In a BJT transistor, the Early effect causes the collector current to increase slightly with increasing reverse bias on the collector-base junction. This is due to: