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#	Question	Subject and topic	Difficulty
5041	A pure silicon crystal is cooled to 0 K. How does it behave?	Physics Energy bands	Medium
5042	As the temperature of a pure semiconductor increases, its resistance:	Physics Energy bands	Medium
5043	Silicon has a band gap of 1.1 eV. What is the longest wavelength of light that can excite an electron from it…	Physics Energy bands	Hard
5044	To make n-type silicon, the impurity added should be:	Physics Semiconductors	Easy
5045	In a p-type semiconductor, the majority charge carriers are:	Physics Semiconductors	Easy
5046	An n-type semiconductor has many more free electrons than holes. What is the net charge on the crystal?	Physics Semiconductors	Medium
5047	In the energy band diagram of a p-type semiconductor, the acceptor energy level lies:	Physics Semiconductors	Medium
5048	Silicon with nᵢ = 1.5 × 10¹⁶ m⁻³ is doped so that the electron concentration is 5 × 10²² m⁻³. What is the hol…	Physics Semiconductors	Hard
5049	When a p-n junction is forward biased, the width of the depletion region:	Physics p-n junction diode	Easy
5050	The small current through a reverse-biased p-n junction is mainly due to:	Physics p-n junction diode	Medium
5051	A full-wave rectifier is fed from 50 Hz AC mains. What is the fundamental frequency of the ripple in its outp…	Physics p-n junction diode	Medium
5052	In the forward-bias region of a diode, increasing the voltage by 0.1 V increases the current by 20 mA. What i…	Physics p-n junction diode	Easy
5053	A silicon diode with a forward voltage drop of 0.7 V is connected in forward bias in series with a 1 kΩ resis…	Physics p-n junction diode	Hard
5054	The distinctiveness and variation among people in their characteristics and behaviour patterns is called	Psychology Individual differences	Easy
5055	Which psychological attribute refers to a person's potential to acquire a skill after training?	Psychology Individual differences	Easy
5056	A psychologist spends several months studying one child in depth, collecting data from the child's parents, t…	Psychology Individual differences	Medium
5057	A researcher claims that a person who is honest at home may cheat in an examination hall because behaviour de…	Psychology Individual differences	Medium
5058	Which statement about psychological attributes is most accurate?	Psychology Individual differences	Hard
5059	Which theorist proposed that intelligence consists of a general factor and specific factors?	Psychology Intelligence and its theories	Easy
5060	A child aged 8 years has a mental age of 10 years. What is the child's IQ?	Psychology Intelligence and its theories	Easy