PHYSICS

Question 1

What is the formula for calculating speed?

Answer 1

Speed = Distance / Time

Question 2

True or False: Acceleration is the rate of change of velocity.

Answer 2

True

Question 3

Fill in the blank: The unit of force in the SI system is the ______.

Answer 3

Newton

Question 4

What is the principle of conservation of energy?

Answer 4

Energy cannot be created or destroyed, only transformed from one form to another.

Question 5

Which law states that for every action, there is an equal and opposite reaction?

Answer 5

Newton’s Third Law of Motion

Question 6

What is the formula for gravitational potential energy?

Answer 6

Potential Energy = mass × gravitational field strength × height

Question 7

True or False: The total momentum of a closed system remains constant.

Answer 7

True

Question 8

What is the definition of work in physics?

Answer 8

Work is done when a force causes displacement.

Question 9

Multiple Choice: What is the unit of power? A) Joule B) Watt C) Newton

Answer 9

B) Watt

Question 10

What is the formula for calculating kinetic energy?

Answer 10

Kinetic Energy = 0.5 × mass × velocity²

Question 11

Fill in the blank: The speed of light in a vacuum is approximately ______ meters per second.

Answer 11

299,792,458

Question 12

What is the difference between scalar and vector quantities?

Answer 12

Scalar quantities have magnitude only, while vector quantities have both magnitude and direction.

Question 13

True or False: The acceleration due to gravity on Earth is approximately 9.81 m/s².

Answer 13

True

Question 14

What is a wave?

Answer 14

A wave is a disturbance that transfers energy through space or matter.

Question 15

Multiple Choice: Which type of wave requires a medium to travel? A) Electromagnetic B) Sound C) Light

Answer 15

B) Sound

Question 16

What is the law of reflection?

Answer 16

The angle of incidence is equal to the angle of reflection.

Question 17

Fill in the blank: The formula for density is ______.

Answer 17

Density = Mass / Volume

Question 18

What is the significance of absolute zero?

Answer 18

Absolute zero is the theoretical temperature at which a system’s entropy reaches its minimum value.

Question 19

True or False: An object in free fall experiences no air resistance.

Answer 19

True

Question 20

What are the three types of heat transfer?

Answer 20

Conduction, convection, and radiation.

Question 21

Multiple Choice: What is the primary force that keeps planets in orbit around the sun? A) Magnetism B) Gravity C) Friction

Answer 21

B) Gravity

Question 22

What is the principle of superposition in waves?

Answer 22

When two or more waves overlap, the resultant displacement is the sum of the individual displacements.

Question 23

Fill in the blank: The unit of electric current is the ______.

Answer 23

Ampere

Question 24

What is Ohm’s Law?

Answer 24

Voltage = Current × Resistance

Question 25

True or False: A conductor allows electricity to flow easily through it.

Answer 25

True

Question 26

What is the definition of frequency?

Answer 26

Frequency is the number of cycles of a wave that occur in a unit of time.

Question 27

Multiple Choice: What type of lens is used to converge light rays? A) Concave B) Convex C) Cylindrical

Answer 27

B) Convex

Question 28

What is the formula for pressure?

Answer 28

Pressure = Force / Area

Question 29

Fill in the blank: The phenomenon of light bending when it passes from one medium to another is called ______.

Answer 29

Refraction

Question 30

What is the difference between mass and weight?

Answer 30

Mass is the amount of matter in an object, while weight is the force exerted by gravity on that mass.

Question 31

True or False: All forms of energy can be converted into mechanical energy.

Answer 31

False

Question 32

What is the unit of energy in the SI system?

Answer 32

Joule

Question 33

Multiple Choice: Which of the following is a non-renewable energy source? A) Solar B) Wind C) Coal

Answer 33

C) Coal