Physics Objective

1.What is the SI unit of force?

• Newton
• Joule
• Watt
• Pascal

Ans Newton

2.Which of the following is a vector quantity?

• Mass
• Speed
• Distance
• Acceleration

Ans Acceleration

3. What is the formula for density?

• Density = Mass × Volume
• Density = Force × Time
• Density = Velocity × Time
• Density = Acceleration × Mass

Ans Density = Mass × Volume

4.What is the unit of electric current?

• Volt
• Ampere
• Watt
• Ohm

Ans Ampere

5.The SI unit of magnetic flux is:

• Weber
• Tesla
• Ohm
• Ampere-turn

Ans Weber

6. The phenomenon of splitting of light into its component colors is known as:

• Refraction
• Dispersion
• Diffraction
• Reflection

Ans Diffraction

7. Which of the following is a greenhouse gas?

• Oxygen
• Nitrogen
• Carbon Dioxide
• Hydrogen

Ans Carbon Dioxide

8. In a parallel circuit, the voltage across each component is:

• Equal
• Proportional to resistance
• Inversely proportional to resistance
• Zero

Ans Equal

9.What is the speed of light in a vacuum?

• 300,000 km/s
• 150,000 km/s
• 1,000,000 km/s
• 500,000 km/s

Ans 300,000 km/s

10.The process of converting a gas into a liquid is called:

• Evaporation
• Condensation
• Sublimation
• Vaporization

Ans Condensation

11.Who formulated the laws of motion?

• Isaac Newton
• Galileo Galilei
• Albert Einstein
• Nikola Tesla

Ans Isaac Newton

12.Which particle is positively charged?

• Proton
• Electron
• Neutron
• Photon

Ans Proton

13.What is the force that opposes motion between two surfaces in contact?

• Frictional Force
• Tension Force
• Gravitational Force
• Elastic Force

Ans Frictional Force

14.Who discovered the electron?

• J.J. Thomson
• Ernest Rutherford
• Niels Bohr
• Marie Curie

Ans J.J. Thomson

15.What is the boiling point of water in Celsius?

• 100°C
• 0°C
• 50°C
• 150°C

Ans 100°C

16.What is the unit of frequency?

• Watt
• Hertz
• Joule
• Newton

Ans Hertz

17.In which state of matter do particles have the most energy and move freely?

• Solid
• Liquid
• Gas
• Plasma

Ans Gas

18.What is the formula for acceleration?

• a = v/t
• a = s/t
• a = vt
• a = v/s

Ans a = v/t

19.Who discovered X-rays?

• Marie Curie
• Wilhelm Roentgen
• Albert Einstein
• Max Planck

Ans Wilhelm Roentgen

20.What is the force that opposes the motion of an object through a fluid?

• Friction
• Tension
• Viscosity
• Gravity

Ans Viscosity