ELECTRICITY CHAPTER # 16 Physics 10th - Question Answers

 Physics 10th - Question Answers

ELECTRICITY
CHAPTER # 16

Q.1: What do you know about the electrical nature of matter?

Ans:
Matter is made up of atoms and an atom consists of three elementary particles called neutron, proton, and electron.

• Proton is positively charged and present in the nucleus. It is 1836 times heavier than an electron.
• Neutron has no charge. It is also present in the nucleus. Its mass is equal to the mass of a proton.
• Electron is a negatively charged particle. Its charge is equal to the charge of a proton. Electrons move around the nucleus in orbits.

NATURE OF LIGHT AND ELECTROMAGNETIC SPECTRUM CHAPTER # 15 Physics 10th - Question Answers

 Physics 10th - Question Answers

NATURE OF LIGHT AND ELECTROMAGNETIC SPECTRUM
CHAPTER # 15

Q.1: What is Newton’s corpuscular theory of light?

Ans:
This theory which was proposed by Newton is given briefly as under:

• Light consists of tiny (minute) particles called corpuscles.
• These corpuscles are emitted from a source of light (like the sun).
• These corpuscles are traveled in a straight line.
• When these particles enter the eyes, they create the sensation of sight.
• Velocity of light in a denser medium is greater.

Refraction of Light and Optical Instruments (Chapter # 14) Physics 10th Question Answers

Refraction of Light and Optical Instruments

Q.1: Define refraction of light and laws of refraction?

Answer:

Refraction: When a ray of light enters from one medium into another obliquely, it undergoes a change not only in direction but in velocity as well. This change of direction and velocity of light as it enters from one medium into another is known as refraction of light.

PROPAGATION AND REFLECTION OF LIGHT (Chapter # 13) Physics 10th - Question Answers

Physics 10th - Question Answers

PROPAGATION AND REFLECTION OF LIGHT

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Q.1: What do you understand by rectilinear propagation of light or path of light?

Ans:

• A ray of light travels in a straight path or straight line. This phenomenon is known as rectilinear propagation of light.

FUNCTIONS:Chapter # 05: COMPUTER SCIENCE 10TH – DETAILED QUESTION ANSWERS

 COMPUTER SCIENCE 10TH – DETAILED QUESTION ANSWERS

Chapter # 05: FUNCTIONS

Q.1: What do you know about functions?

Ans:
INTRODUCTION TO FUNCTIONS
A function is a block of code that performs a particular task. It is also called a method or a sub-routine or a procedure, etc. There are some situations when we need to write a particular block of code more than once in our program. This may lead to bugs and irritation for the programmer. C++ language provides an approach in which you need to declare and define a group of statements once and that can be called and used whenever required. This saves both time and space. Every C++ program has at least one function, which is main(), and all the programs can define additional functions.

CONTROL STRUCTURE-Chapter # 04- COMPUTER SCIENCE 10TH – DETAILED QUESTION ANSWERS

 COMPUTER SCIENCE 10TH – DETAILED QUESTION ANSWERS

CONTROL STRUCTURE
Chapter # 04

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Q.1: What are control structures?

Ans:
CONTROL STRUCTURES / STATEMENTS
Control structures control the flow of execution in a program or function. Control structures are used to repeat any block of code, transfer control to a specific block of code, and make a choice by selection. There are three basic control structures in C++ programming:

1. Selection / Decision Making Control Structure
2. Loops / Iteration Control Structure
3. Jumps

INPUT / OUTPUT HANDLING IN C++ Chapter # 03- COMPUTER SCIENCE 10TH – DETAILED QUESTION ANSWERS

 COMPUTER SCIENCE 10TH – DETAILED QUESTION ANSWERS

INPUT / OUTPUT HANDLING IN C++
Chapter # 03

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Q.1: Describe basic structure of C++ program.

Ans:
BASIC STRUCTURE OF C++ PROGRAM
A C++ program is mainly divided into three parts:

1. Preprocessor Directives
2. Main Function Header
3. Body of program / Function

Basics of Programming in C++ -Chapter #02- Computer Science 10th - Detailed Question Answers

 Computer Science 10th - Detailed Question Answers

Basics of Programming in C++

Q.1: Define Computer Program?
Ans. Computer Program:
A computer program is a set of instructions that performs a specific task when executed by a computer. A computer requires programs to function and typically executes the program's instructions in a central processing unit. A computer program is usually written by a computer programmer in a programming language.

PROBLEM SOLVING AND ALGORITHM DESIGNING-Chapter #01- COMPUTER SCIENCE 10TH – DETAILED QUESTION ANSWERS

 COMPUTER SCIENCE 10TH – DETAILED QUESTION ANSWERS

PROBLEM SOLVING AND ALGORITHM DESIGNING

Q.1: What is problem solving?
Ans.
PROBLEM SOLVING:
Problem solving is a procedure to figure out the solution of complex problems. Problem solving is the main process in computer programming, where programmers first understand the problem, plan the solution, and then understand how to translate the algorithm into something a computer can do, and finally how to write the specific syntax or code required by a computer to get the job done.