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

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

Inversely Related

Directly Related

Unrelated

2 / 40

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

Energy Hill

Force Field

Quantum Barrier

3 / 40

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

Remains Constant

Oscillates

Decays Exponentially

4 / 40

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

Zero Resistance

Positive Resistance

Negative Resistance

5 / 40

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

Kinetic Energy

Thermal Energy

Potential Energy

6 / 40

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

Non-Classical Pathways

Classical Paths

Deterministic Paths

7 / 40

Which field uses quantum tunneling for microprocessor technology?

Optics

Thermodynamics

Electronics

8 / 40

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

Charge Trapping

Charge Leakage

Charge Pumping

9 / 40

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

Phonons

Excitons

Instantons

10 / 40

What is a common application of quantum tunneling in electronics?

Tunnel Diodes

LEDs

Solar Panels

11 / 40

How does temperature affect quantum tunneling probability?

Slight Increase

No Change

Dramatic Decrease

12 / 40

In which process is quantum tunneling crucial in stars?

Beta Decay

Nuclear Fission

Nuclear Fusion

13 / 40

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

Classically Forbidden

Quantum Allowed

Barrier Region

14 / 40

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

Leakage Current

Capacitive Current

Conduction Current

15 / 40

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

Increases

No Effect

Decreases

16 / 40

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

Beta Decay

Alpha Decay

Gamma Decay

17 / 40

How is quantum tunneling related to particle-wave duality?

Demonstrates Duality

Irrelevant to Duality

Contradicts Duality

18 / 40

What role does quantum tunneling play in chemical reactions?

Increases Reaction Rate

Stabilizes Intermediates

Lowers Activation Energy

19 / 40

In which type of materials is quantum tunneling commonly observed?

Semiconductors

Insulators

Superconductors

20 / 40

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

Producing electricity

Generating X-rays

Imaging atoms

21 / 40

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

Solar Cells

Hydroelectric Generators

Wind Turbines

22 / 40

What is the phenomenon where particles pass through a barrier?

Quantum Entanglement

Quantum Tunneling

Quantum Superposition

23 / 40

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

Shortens

Lengthens

No Effect

24 / 40

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

Penetrate Barriers

Stop Moving

Absorb More Energy

25 / 40

Quantum tunneling is essential for which astrophysical process?

Black Hole Formation

Stellar Nucleosynthesis

Planet Formation

26 / 40

Quantum tunneling contributes to which effect in semiconductors?

Photoelectric Effect

Compton Effect

Zener Effect

27 / 40

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

Increases

No Effect

Decreases

28 / 40

Which concept is not directly related to quantum tunneling?

Quantum Decoherence

Quantum Computing

Quantum Chromodynamics

29 / 40

Quantum tunneling is important in which biological process?

DNA Replication

Protein Synthesis

Enzyme Catalysis

30 / 40

Quantum tunneling is a direct consequence of which principle?

Complementarity

Wave-Particle Duality

Uncertainty Principle

31 / 40

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

Josephson Junction

Schottky Junction

PN Junction

32 / 40

Who first theorized the concept of quantum tunneling?

Albert Einstein

George Gamow

Niels Bohr

33 / 40

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

Bipolar Junction Transistors

JFETs

MOSFETs

34 / 40

What determines the tunneling rate in quantum mechanics?

Both Width and Height

Barrier Height

Barrier Width

35 / 40

What is the outcome when a particle undergoes quantum tunneling?

Reflected

Absorbed

Transmitted

36 / 40

Which natural phenomenon relies on quantum tunneling?

Gravitational Waves

Radioactive Decay

Cosmic Microwave Background

37 / 40

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

Tunneling Decay

Interference

Wavefunction Collapse

38 / 40

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

Quantum Time Delay

Time to Tunnel

Barrier Crossing Speed

39 / 40

Which equation is central to the theory of quantum tunneling?

Dirac Equation

Heisenberg Equation

Schrödinger Equation

40 / 40

Which principle is exemplified by quantum tunneling in atoms?

Pauli Exclusion

Bohr Correspondence

Heisenberg Uncertainty

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