SS1 Third Term Physics Past Questions And Answers

 

20 SS1 third term Physics questions with options and answers:

 

Question: What is the SI unit of frequency?

 

A) Hertz (Hz)

B) Watt (W)

C) Newton (N)

D) Joule (J)

Answer: A) Hertz (Hz)

Question: Which of the following is a vector quantity?

 

A) Speed

B) Distance

C) Time

D) Velocity

Answer: D) Velocity

Question: What is the law of inertia?

 

A) 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.

B) The force of an object is equal to the mass of that object multiplied by its acceleration.

C) For every action, there is an equal and opposite reaction.

D) None of the above.

Answer: A) 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.

Question: What is the formula for electric power in terms of voltage and current?

 

A) Power = Voltage × Current

B) Power = Voltage ÷ Current

C) Power = Current ÷ Voltage

D) Power = Voltage + Current

Answer: A) Power = Voltage × Current

Question: According to the law of reflection, the angle of incidence is always equal to the angle of:

 

A) Refraction

B) Reflection

C) Diffraction

D) Transmission

Answer: B) Reflection

Question: Which of the following is a renewable source of energy?

 

A) Coal

B) Natural Gas

C) Solar Power

D) Nuclear Power

Answer: C) Solar Power

Question: What is the unit of measurement for electric charge?

 

A) Ampere (A)

B) Coulomb (C)

C) Volt (V)

D) Ohm (Ω)

Answer: B) Coulomb (C)

Question: In an electrical circuit, what is the role of a resistor?

 

A) To store electrical energy

B) To regulate current

C) To prevent overloading

D) To amplify voltage

Answer: B) To regulate current

Question: Which of Newton’s laws states that the net force acting on an object is equal to the mass of that object multiplied by its acceleration?

 

A) Newton’s First Law

B) Newton’s Second Law

C) Newton’s Third Law

D) Newton’s Law of Universal Gravitation

Answer: B) Newton’s Second Law

Question: What is the formula for calculating speed?

 

A) Speed = Distance/Time

B) Speed = Time/Distance

C) Speed = Acceleration/Time

D) Speed = Displacement/Time

Answer: A) Speed = Distance/Time

Question: The phenomenon of a substance changing directly from a gas to a solid without passing through the liquid phase is called:

 

A) Evaporation

B) Sublimation

C) Condensation

D) Fusion

Answer: B) Sublimation

Question: What is the relationship between the frequency and wavelength of a wave?

 

A) Inversely proportional

B) Directly proportional

C) No relationship

D) Both A and B

Answer: B) Directly proportional

Question: What is the purpose of a diode in an electrical circuit?

 

A) To store electrical energy

B) To regulate voltage

C) To allow current flow in one direction

D) To increase resistance

Answer: C) To allow current flow in one direction

Question: Which of the following is a characteristic of parallel circuits?

 

A) Same current flows through each component

B) Different potential differences across components

C) Total resistance is the sum of individual resistances

D) All of the above

Answer: D) All of the above

Question: What is the law of conservation of angular momentum?

 

A) Angular momentum is constant in the absence of external torque.

B) Angular momentum decreases over time.

C) Angular momentum is inversely proportional to mass.

D) Angular momentum is directly proportional to velocity.

Answer: A) Angular momentum is constant in the absence of external torque.

Question: Which type of lens converges light rays?

 

A) Concave lens

B) Convex lens

C) Plano-concave lens

D) Plano-convex lens

Answer: B) Convex lens

Question: What is the SI unit of magnetic flux?

 

A) Tesla (T)

B) Weber (Wb)

C) Ampere (A)

D) Volt (V)

Answer: B) Weber (Wb)

Question: Which of the following is a characteristic of transverse waves?

 

A) Particles move parallel to the direction of the wave.

B) Particles move perpendicular to the direction of the wave.

C) Compression and rarefaction occur.

D) Longitudinal oscillations take place.

Answer: B) Particles move perpendicular to the direction of the wave.

Question: What is the purpose of a step-up transformer in an electrical circuit?

 

A) To increase current

B) To decrease voltage

C) To increase voltage

D) To decrease current

Answer: C) To increase voltage

Question: Which of the following is a unit of pressure?

 

A) Pascal (Pa)

B) Newton (N)

C) Joule (J)

D) Watt (W)

Answer: A) Pascal (Pa).