WAVES AND SOUND (Chapter # 12) Physics 10th - Question Answers

 Physics 10th - Question Answers

WAVES AND SOUND

Q.1: Define the following terms:

• Wave
• Wave motion
• Oscillation or vibration
• Oscillatory or vibratory motion
• Periodic motion
• Displacement
• Amplitude
• Time period
• Frequency
• Wavelength

HEAT : Chapter # 11 Physics 10th - Question Answers

 Physics 10th - Question Answers

Chapter # 11: HEAT

Q.1: Define Heat. What is its unit?
Ans: HEAT:
The total kinetic energy of the molecules present in a body is called heat. It is the form of energy which is transferred from one body to another due to the difference in temperature.

Unit:
The S.I. unit of heat is Joule.

PROPERTIES OF MATER CHAPTER # 10 Physics 10th - Question Answers

 Physics 10th - Question Answers

PROPERTIES OF MATER
CHAPTER # 10

Q.1: Define matter?
Ans: MATTER:
Anything which occupies space and has mass is called matter.

Q.2: Write down the properties of solids?
Ans: PROPERTIES OF SOLIDS:

• The solid bodies have fixed volume and fixed shape.
• In solids, the molecules are closely packed.
• The force of attraction between molecules is very strong; it is because of strong attraction that the solid has fixed shape and fixed size.
• The motion of molecules in a solid body is very much restricted. They just vibrate about their mean position.
• In solids, molecules do not leave their mean position.
• The relative distance between the atoms or molecules of a solid body is fixed.

Simple Machines (Chapter # 09) Physics 10th -Question Answers

 Physics 10th - Simple Machines

Q.1: Define Machine. Write Down the Useful Purposes of Machines.

Ans: Machine: A machine is a device used to perform work in a more convenient way or to speed up work.

OR

A machine can be defined as any device that uses force applied at one point to overcome resistance at another point.

Work, Power, and Energy (Chapter # 08) Physics 10th Question Answers

 Physics 10th - Work, Power, and Energy

Q.1: Define Work. Write Its Formula and Unit. Write Down the Factors on Which Work Depends.

Ans: Work: When a force acts on a body and the body moves through some distance in the direction of the force, work is said to be done.

Circular Motion and Gravitation (Chapter # 07) Physics 10th - Question Answers

 Physics 10th - Question Answers

Circular Motion and Gravitation (Chapter # 07)

Q.1: Define Circular Motion and Give Any Two Examples.

Ans: Circular Motion: When a body moves along the circumference of a circle, it is called circular motion.

Examples:

• The rotation of Earth and other planets around the Sun.
• The wheel of a moving bicycle.

Equilibrium (Chapter # 06) Physics 10th - Question Answers

Physics 10th - Question Answers

Equilibrium (Chapter # 06)

Q.1: Define Parallel Forces?

Ans: Parallel forces can be defined as: “When a number of forces act on a body and if their directions are parallel, they are called parallel forces.”

VECTORS : CHAPTER # 05 Physics 10th - Question Answers

 Physics 10th - Question Answers

CHAPTER # 05: VECTORS

Q.1: Define scalar and vector quantities and give five examples of each?

Ans:

Scalar Quantities: Physical quantities which have magnitude and units but there is no need of direction to describe them are called scalar quantities. Scalar quantities can be solved by simple arithmetic rules. They can add, subtract, multiply, and divide easily.

Examples: Mass, length, time, speed, distance, volume, temperature, heat, energy, pressure, power, etc.

MOTION AND FORCE Chapter # 04 Physics 10th - Question Answers

 Physics 10th - Question Answers

MOTION AND FORCE
Chapter # 04

Q.1: Define force. Write down its formula and units. Also write down the factors on which force depends?

Ans: FORCE:
Force is that agent which changes or tends to change the state of rest or of motion of a body. It can also distort or tends to distort the shape of a body to which it is applied. It is denoted by $F$. It is a vector quantity.

KINEMATICS OF LINEAR MOTION Chapter # 03 Physics 10th - Question Answers

 Physics 10th - Question Answers

KINEMATICS OF LINEAR MOTION
Chapter # 03

Q.1: Define rest?

Ans: REST:
A body is said to be in the state of rest if it does not change its position with respect to its surroundings.

INTRODUCTION TO PHYSICS Chapter # 01 Physics 10th - Question Answers

 Physics 10th - Question Answers

INTRODUCTION TO PHYSICS
Chapter # 01

Q.1: What is Physics? Write the name of branches of Physics and explain them?

Ans: PHYSICS:
Physics is defined as a science which deals with the interaction of matter and energy.
OR
It is the branch of science which deals with physical properties, behavior of matter and bodies. Nowadays, Physics deals with the production of energy and their mutual relationship.