Quantum Tunneling MCQs with Answers

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Quantum Tunneling Online Quiz

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• Test Name: Quantum Tunneling MCQ Quiz Practice
• Type: Quiz Test
• Total Questions: 40
• Total Marks: 40
• Time: 40 minutes

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Quantum Tunneling

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1 / 40

Quantum tunneling is used in which type of junction in superconductors?

PN Junction

Schottky Junction

Josephson Junction

2 / 40

What does quantum tunneling allow in a scanning tunneling microscope (STM)?

Imaging atoms

Generating X-rays

Producing electricity

3 / 40

In the context of quantum tunneling, what does "tunneling time" refer to?

Time to Tunnel

Quantum Time Delay

Barrier Crossing Speed

4 / 40

What is the outcome when a particle undergoes quantum tunneling?

Transmitted

Reflected

Absorbed

5 / 40

Quantum tunneling is essential for which astrophysical process?

Black Hole Formation

Planet Formation

Stellar Nucleosynthesis

6 / 40

Which term describes the decrease in amplitude of a wavefunction in a barrier?

Interference

Tunneling Decay

Wavefunction Collapse

7 / 40

What is the key characteristic of quantum tunneling in quantum mechanics?

Deterministic Paths

Non-Classical Pathways

Classical Paths

8 / 40

What is a common application of quantum tunneling in electronics?

Tunnel Diodes

LEDs

Solar Panels

9 / 40

Quantum tunneling is a direct consequence of which principle?

Wave-Particle Duality

Complementarity

Uncertainty Principle

10 / 40

Which principle is exemplified by quantum tunneling in atoms?

Heisenberg Uncertainty

Bohr Correspondence

Pauli Exclusion

11 / 40

What effect does an increase in particle mass have on tunneling probability?

Decreases

No Effect

Increases

12 / 40

In which type of materials is quantum tunneling commonly observed?

Semiconductors

Superconductors

Insulators

13 / 40

In quantum tunneling, what can particles do despite insufficient energy?

Penetrate Barriers

Absorb More Energy

Stop Moving

14 / 40

In quantum field theory, what concept is analogous to quantum tunneling?

Phonons

Excitons

Instantons

15 / 40

What is one of the phenomena that can be explained by quantum tunneling?

Gamma Decay

Alpha Decay

Beta Decay

16 / 40

In a tunnel diode, what is achieved by quantum tunneling?

Zero Resistance

Negative Resistance

Positive Resistance

17 / 40

Which concept is not directly related to quantum tunneling?

Quantum Decoherence

Quantum Computing

Quantum Chromodynamics

18 / 40

Who first theorized the concept of quantum tunneling?

George Gamow

Albert Einstein

Niels Bohr

19 / 40

How does temperature affect quantum tunneling probability?

Dramatic Decrease

No Change

Slight Increase

20 / 40

What role does quantum tunneling play in the operation of flash memory?

Charge Leakage

Charge Trapping

Charge Pumping

21 / 40

What role does quantum tunneling play in chemical reactions?

Increases Reaction Rate

Lowers Activation Energy

Stabilizes Intermediates

22 / 40

What is the relationship between energy barrier height and tunneling probability?

Inversely Related

Directly Related

Unrelated

23 / 40

Quantum tunneling is important in which biological process?

Protein Synthesis

DNA Replication

Enzyme Catalysis

24 / 40

Which energy is lower for particles that quantum tunnel through a barrier?

Kinetic Energy

Thermal Energy

Potential Energy

25 / 40

What happens to the wavefunction of a particle as it tunnels through a barrier?

Oscillates

Remains Constant

Decays Exponentially

26 / 40

Which equation is central to the theory of quantum tunneling?

Dirac Equation

Heisenberg Equation

Schrödinger Equation

27 / 40

Quantum tunneling contributes to which effect in semiconductors?

Photoelectric Effect

Zener Effect

Compton Effect

28 / 40

What is the effect of barrier thickness on the tunneling probability?

Increases

Decreases

No Effect

29 / 40

In quantum mechanics, what is the "forbidden" region called?

Barrier Region

Quantum Allowed

Classically Forbidden

30 / 40

In quantum mechanics, what is the name for a potential energy barrier?

Energy Hill

Quantum Barrier

Force Field

31 / 40

In which process is quantum tunneling crucial in stars?

Nuclear Fission

Beta Decay

Nuclear Fusion

32 / 40

Quantum tunneling can help explain the operation of which energy conversion device?

Wind Turbines

Solar Cells

Hydroelectric Generators

33 / 40

Quantum tunneling can result in which type of current in microelectronics?

Conduction Current

Capacitive Current

Leakage Current

34 / 40

What is the phenomenon where particles pass through a barrier?

Quantum Entanglement

Quantum Tunneling

Quantum Superposition

35 / 40

Which field uses quantum tunneling for microprocessor technology?

Electronics

Optics

Thermodynamics

36 / 40

Quantum tunneling is a significant effect in which type of transistors?

MOSFETs

Bipolar Junction Transistors

JFETs

37 / 40

How does quantum tunneling affect the lifetime of a radioactive nucleus?

No Effect

Shortens

Lengthens

38 / 40

Which natural phenomenon relies on quantum tunneling?

Cosmic Microwave Background

Radioactive Decay

Gravitational Waves

39 / 40

How is quantum tunneling related to particle-wave duality?

Contradicts Duality

Irrelevant to Duality

Demonstrates Duality

40 / 40

What determines the tunneling rate in quantum mechanics?

Barrier Height

Both Width and Height

Barrier Width

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