Nav-3 (Phase-1) MCQs Online Exam

  Grade- 5

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Positional and Non-Positional Number Systems,

  In computer science and mathematics, number systems are fundamental for representing numerical values. They are broadly categorized into Positional and Non-Positional Number Systems , each with unique characteristics and applications. 1. Positional Number System In this system, the position of each digit relative to others determines its value. The value of a number is computed based on a base or radix, and each position represents a power of the base. Key Characteristics: Base/ Radix : The number of distinct digits used, including 0. For example: Binary (Base 2): Uses digits 0 and 1. Decimal (Base 10): Uses digits 0 through 9. Hexadecimal (Base 16): Uses digits 0-9 and letters A-F. Positional Weight : Each digit’s value is multiplied by the base raised to the power of its position. For instance, in decimal 432=4×102+3×101+2×100432 = 4 \times 10^2 + 3 \times 10^1 + 2 \times 10^0432=4×102+3×101+2×100. Examples in Computin...
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All About Computer Monitor

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A computer monitor is an output device that displays visual information to the user. It is essential for interacting with the computer, enabling users to view the graphical user interface (GUI), applications, videos, and more. Here's a detailed look at various aspects of computer monitors: Types of Monitors 1. CRT (Cathode Ray Tube) Monitors: Components: Uses electron beams to illuminate phosphor dots on the screen. Function: Electron guns shoot beams at the screen to create images. Advantages: Accurate color reproduction and multiple resolutions. Disadvantages: Bulky, heavy, and high power consumption. 2. LCD (Liquid Crystal Display) Monitors: Components: Uses liquid crystals sandwiched between two glass plates, backlit by a fluorescent or LED light source. Function: Liquid crystals modulate light to produce images. Advantages: Lightweight, energy-efficient, and slim design. Disadvantages: Limited viewing angles and color reproduction in some models. 3. LED (Light Emit...
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Creating a Ping Pong Game in mBlock

  Creating a Ping Pong Game in mBlock is a fun and interactive way for students to learn programming concepts like loops, conditionals, and events. Here's a step-by-step guide: Objective Students will create a basic ping-pong game where: 1.     A ball moves across the screen. 2.     Players control a paddle to bounce the ball. 3.     The game ends if the ball misses the paddle. Step-by-Step Instructions 1. Setup the Stage Open mBlock and switch to the Sprite Tab . Choose or draw a simple backdrop (e.g., a solid background or a sports theme). 2. Add Sprites Ball : Click "Choose a Sprite" and select or draw a ball. Paddle : Add a new sprite, like a rectangle, to represent the paddle. 3. Code for the Ball 1.     Initialize the Ball : o    Add the following script to the Ball: plaintext Copy code When Green Flag clicke...
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