SS1 First Term Physics Past Questions and Answers

20 SS1 Physics questions with options and answers:

 

Question: What is the SI unit of force?

a) Newton (N)

b) Watt (W)

c) Joule (J)

d) Kilogram (kg)

Answer: a) Newton (N)

 

Question: Which of the following is a scalar quantity?

 

a) Velocity

b) Mass

c) Force

d) Acceleration

Answer: b) Mass

 

Question: What does the law of conservation of energy state?

 

a) Energy cannot be created or destroyed, only transferred or converted

b) Energy increases with time

c) Energy is dependent on the medium

d) Energy is a constant force

Answer: a) Energy cannot be created or destroyed, only transferred or converted

 

Question: The speed of light is approximately:

 

a) 300,000 km/s

b) 150,000 m/s

c) 500,000 km/h

d) 1,000,000 m/h

Answer: a) 300,000 km/s

 

Question: What is the unit of electric current?

 

a) Volt (V)

b) Ampere (A)

c) Ohm (Ω)

d) Watt-hour (Wh)

Answer: b) Ampere (A)

 

Question: Which law states that the total pressure exerted by a confined fluid is constant?

 

a) Pascal’s law

b) Archimedes’ principle

c) Boyle’s law

d) Bernoulli’s principle

Answer: a) Pascal’s law

 

Question: In which state of matter do particles have the most kinetic energy?

 

a) Solid

b) Liquid

c) Gas

d) Plasma

Answer: d) Plasma

 

Question: What is the SI unit of power?

 

a) Watt (W)

b) Joule (J)

c) Newton (N)

d) Volt (V)

Answer: a) Watt (W)

 

Question: Which of the following is a primary color of light?

 

a) Red

b) Yellow

c) Blue

d) Green

Answer: c) Blue

 

Question: What is the formula for density?

 

a) Density = Mass/Volume

b) Density = Volume/Mass

c) Density = Force/Area

d) Density = Acceleration/Time

Answer: a) Density = Mass/Volume

 

Question: The force acting on an object due to gravity is known as:

 

a) Friction

b) Tension

c) Weight

d) Inertia

Answer: c) Weight

 

Question: Which law describes the relationship between the pressure and volume of a gas at constant temperature?

 

a) Boyle’s law

b) Charles’ law

c) Gay-Lussac’s law

d) Avogadro’s law

Answer: a) Boyle’s law

 

Question: What is the unit of electric resistance?

 

a) Ampere (A)

b) Ohm (Ω)

c) Volt (V)

d) Watt (W)

Answer: b) Ohm (Ω)

 

Question: The nucleus of an atom is composed of:

 

a) Electrons and protons

b) Neutrons and electrons

c) Protons and neutrons

d) Electrons and positrons

Answer: c) Protons and neutrons

 

Question: Which of the following is an example of a simple machine?

 

a) Lever

b) Battery

c) Solar panel

d) Conductor

Answer: a) Lever

 

Question: What is the law of reflection?

 

a) The angle of incidence is equal to the angle of refraction

b) The angle of reflection is equal to the angle of incidence

c) Light travels in straight lines

d) The speed of light is constant

Answer: b) The angle of reflection is equal to the angle of incidence

 

Question: What is the SI unit of temperature?

 

a) Celsius (°C)

b) Kelvin (K)

c) Fahrenheit (°F)

d) Rankine (°R)

Answer: b) Kelvin (K)

 

Question: What is the phenomenon of bending of light when it passes from one medium to another?

 

a) Refraction

b) Reflection

c) Diffraction

d) Dispersion

Answer: a) Refraction

 

Question: Which law states that an object at rest will remain at rest, and an object in motion will remain in motion with a constant velocity unless acted upon by a net external force?

 

a) Newton’s first law of motion

b) Newton’s second law of motion

c) Newton’s third law of motion

d) Law of gravitation

Answer: a) Newton’s first law of motion

 

Question: The process of a substance changing directly f

rom a solid to a gas without passing through the liquid phase is known as:

 

a) Sublimation

b) Evaporation

c) Condensation

d) Fusion

Answer: a) Sublimation