Physics and Operating Systems Quiz

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According to Fermat's principle, what path does light follow?

The longest possible path

The straightest path

The path that takes the least time (correct)

The path with the highest refractive index

What is the primary mechanism of light amplification in a laser?

Spontaneous emission

Thermal radiation

Stimulated emission (correct)

Absorption of photons

Which type of interference fringes are observed in a plane parallel film when viewed with transmitted light?

Newton's rings

Wedge fringes

Haidinger fringes (correct)

Young's fringes

What is the primary function of a Zener diode in a voltage regulator circuit?

To maintain a constant voltage (A) Signup and view all the answers

What physical quantity is directly measured in the Stern-Gerlach experiment?

Electron magnetic moment (A) Signup and view all the answers

What phenomenon explains the splitting of spectral lines in the presence of an external magnetic field?

Zeeman effect (C) Signup and view all the answers

What term refers to the property of certain crystals having two different refractive indices?

Birefringence (A) Signup and view all the answers

What is the function of a Nicol prism?

To produce plane polarized light (A) Signup and view all the answers

Which property of nanomaterials is most directly affected by the reduction of dimensions?

Quantum size effects (A) Signup and view all the answers

What is the primary function of a device driver in an operating system?

To provide an interface between hardware devices and the OS (B) Signup and view all the answers

Which of the following best describes the role of the kernel in an operating system?

To manage system resources and provide core OS services (A) Signup and view all the answers

What is the main purpose of the Access Control List (ACL) in a security system?

To define the permissions of users or groups for accessing certain resources (C) Signup and view all the answers

Which of the following spectroscopy techniques involves the analysis of emitted X-rays after materials are bombarded with high-energy particles?

Auger Spectroscopy (A) Signup and view all the answers

Which of the following correctly sequences the electromagnetic spectrum from longest wavelength to shortest wavelength?

Radio waves, Infrared, Visible light, X-rays (C) Signup and view all the answers

What role does Direct Memory Access (DMA) play in input/output operations?

It allows an I/O device to directly transfer data to or from memory without the CPU's direct involvement. (B) Signup and view all the answers

What does 'time stamping' refer to in the context of email investigations?

The process of tracking when and where an email was sent and received. (A) Signup and view all the answers

What is the key characteristic of elliptically polarized light?

The electric field vector traces an ellipse. (C) Signup and view all the answers

Which of the following best describes the function of a quarter wave plate?

It converts plane polarized light into circularly polarized light. (C) Signup and view all the answers

In an RL circuit, what happens to the current during the 'growth' phase?

The current increases exponentially to a maximum value. (B) Signup and view all the answers

What is the primary purpose of a bridge circuit in AC measurements?

To allow for the precise measurement of an unknown component through voltage balancing. (B) Signup and view all the answers

What is the underlying principle of the Born-Oppenheimer approximation?

Electronic motion is much faster than nuclear motion. (A) Signup and view all the answers

Which of the following is a key effect of the non-rigid rotator model on rotational spectra?

A decrease in the spacing between rotational energy levels at higher rotational energy. (D) Signup and view all the answers

According to the liquid drop model, what does the semi-empirical mass formula predict?

The overall stability of a nucleus against nuclear fission. (D) Signup and view all the answers

What is the Pauli's Neutrino Hypothesis introduced to explain?

The continuous energy spectrum in beta decay. (A) Signup and view all the answers