Explanation

• Acceleration due to gravity is independent of the mass of the falling object.
• All objects fall with the same acceleration in vacuum.
• Gravity depends on Earth’s mass and radius, not object’s mass.
• It slightly varies with latitude due to Earth’s shape and rotation.
• Standard value: 9.8 m/s² near Earth’s surface.

Last verified on 08-06-2026

Explanation

• Oxygen is released from hemoglobin mainly in body tissues.
• Hemoglobin carries oxygen in the blood from lungs to body.
• In tissues, oxygen is needed for cellular respiration.
• Low oxygen concentration in tissues helps release oxygen.
• This process ensures energy production in cells.

Last verified on 08-06-2026

Explanation

• Law of conservation of momentum applies when no external force acts on a system.
• Momentum of a system remains constant in this condition.
• Only internal forces act between objects in the system.
• It is valid for collisions and explosions in isolated systems.
• Total momentum before and after event remains equal.

Last verified on 08-06-2026

Explanation

• Work done by gravity is zero when an object moves horizontally.
• Gravity acts vertically downward.
• Horizontal displacement is perpendicular to gravitational force.
• Work done depends on force × displacement × cos(θ).
• Here θ = 90°, so cos(90°) = 0.

Last verified on 08-06-2026

Explanation

• TCP/IP is used in LAN (Local Area Network) for communication between devices.
• It is a set of networking protocols.
• It allows data transfer between computers in a network.
• It supports addressing and routing of data packets.
• It is the foundation of modern internet and LAN communication.

Last verified on 07-06-2026

Explanation

• MATCH function returns the position of a value in a given range.
• It searches for a value in a list or range.
• It returns the relative position (index) of that value.
• It does not return the value itself, only its location.
• It is commonly used in Excel for lookup operations.

Last verified on 07-06-2026

Explanation

• Presentation layer is responsible for encryption and decryption in the OSI model.
• It ensures data is converted into a secure and usable format.
• It handles data translation, compression, and encryption.

Last verified on 08-06-2026

Explanation

• Stack is used for recursion.
• Because it stores function calls in LIFO order during execution.
• Recursion works by repeatedly calling the same function.
• Each call is stored in memory until it completes execution.

Last verified on 08-06-2026

Explanation

Linear Search works in a sequential manner:

• Average case: O(N/2) → O(N)
• Best case: O(1) (first element found)
• Worst case: O(N) (last element or not found)

Last verified on 08-06-2026

Explanation

• Object-Oriented Programming (OOP) is based on objects and classes.
• Objects contain data (attributes) and methods (functions).
• Classes act as blueprints for creating objects.
• Supports key concepts: Encapsulation, Inheritance, Polymorphism.

Last verified on 08-06-2026