Explanation

Thermionic emission is the process by which electrons are emitted from a hot metal surface.

This occurs when a metal is heated to a high temperature, causing the electrons to gain enough energy to escape from the metal's surface.

This process is also known as thermal electron emission or Edison effect.

Explanation

Tally is an accounting software, which is an application software, not a system software.

System software includes:

• Assembler: Translates assembly language into machine code.
• Compiler: Translates high-level language into machine code.
• Interpreter: Directly executes high-level language code without compiling.

Explanation

• JPEG (Joint Photographic Experts Group) is a file format used for images, not text documents.
• It's commonly used for photos and graphics.

The file extensions suitable for MS Word files:

• .doc: An older file format used by MS Word (up to version 2003).
• .rtf: Rich Text Format, a file format that can be opened by MS Word and other word processing software.
• .docx: The current file format used by MS Word (version 2007 and later).

Explanation

Information is the output from a computer that results from processing input data.

Data is the input, and the computer processes it to produce useful information.

Data (input) → Processing → Information (output)

Explanation

The direction of the magnetic field lines inside a bar magnet is from south pole to north pole.

This is the opposite direction of the field lines outside the magnet, which go from the north pole to the south pole.

Explanation

An algorithm is a sequence of instructions in a computer language that is designed to solve a specific problem or achieve a particular goal.

It's a step-by-step procedure to get the desired results.

Explanation

• A LAN is a computer network that connects devices in a limited geographical area, such as an office building, campus, or home.
• It's perfect for connecting different computers in an organized manner within an office building.

Note:

• MAN (Metropolitan Area Network): Covers a larger area, like a city or town.
• WAN (Wide Area Network): Covers a vast geographical area, like a country or continent.

Explanation

A supercomputer is another name for a high-performance computer (HPC).

Supercomputers are powerful computers that are designed to execute a large number of instructions at an extremely high speed.

It making them ideal for scientific simulations, weather forecasting, cryptography, and other compute-intensive tasks.

Explanation

A DC motor is an electrical machine that converts electrical energy into mechanical energy.

It uses electrical current to generate a magnetic field that interacts with the motor's magnets.

It causing the motor to rotate and produce mechanical energy.

Explanation

Ohm's Law is valid only if the temperature of the conductor remains constant.

If the temperature changes, the resistance of the conductor may change, and Ohm's Law may not hold.