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NTS MCQs

National Testing Service — Complete MCQ Bank

49 Questions
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31
Physics Medium

What is the formula for gravitational potential energy?

  • Ahalf mv squared
  • Bmgh
  • CFxd
  • Dmv
Permalink
Correct Answer: Option B — mgh
Explanation: Gravitational potential energy is calculated as mass multiplied by gravitational acceleration multiplied by height expressed as PE equals mgh where g is approximately 9.8 m/s squared.
Submitted by: PaperMCQs
32
Physics Medium

What is the formula for kinetic energy?

  • Amv
  • Bmgh
  • Chalf mv squared
  • DFxd
Permalink
Correct Answer: Option C — half mv squared
Explanation: Kinetic energy is calculated using the formula KE equals half multiplied by mass multiplied by velocity squared showing that kinetic energy increases with the square of speed.
Submitted by: PaperMCQs
33
Physics Medium

Which colour of visible light has the shortest wavelength?

  • ARed
  • BViolet
  • COrange
  • DYellow
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Correct Answer: Option B — Violet
Explanation: Violet light has the shortest wavelength in the visible spectrum at approximately 380 to 450 nanometres and therefore the highest frequency and energy among visible colours.
Submitted by: PaperMCQs
34
Physics Medium

Which colour of visible light has the longest wavelength?

  • ARed
  • BViolet
  • CBlue
  • DGreen
Permalink
Correct Answer: Option A — Red
Explanation: Red light has the longest wavelength in the visible spectrum at approximately 620 to 750 nanometres while violet has the shortest wavelength.
Submitted by: PaperMCQs
35
Physics Easy

What type of lens is thicker at the centre than at the edges?

  • AConcave lens
  • BPlano-concave lens
  • CBiconcave lens
  • DConvex lens
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Correct Answer: Option D — Convex lens
Explanation: A convex lens also called a converging lens is thicker at the centre than at the edges and brings parallel rays of light to a focus at a point called the focal point.
Submitted by: PaperMCQs
36
Physics Medium

What is the process by which a solid changes directly into a gas without passing through the liquid phase?

  • AEvaporation
  • BSublimation
  • CCondensation
  • DVaporisation
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Correct Answer: Option B — Sublimation
Explanation: Sublimation is the direct phase transition from solid to gas without passing through the liquid state as demonstrated by dry ice converting to carbon dioxide gas.
Submitted by: PaperMCQs
37
Physics Easy

What is the SI unit of frequency?

  • AWatt
  • BNewton
  • CPascal
  • DHertz
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Correct Answer: Option D — Hertz
Explanation: Hertz is the SI unit of frequency representing the number of cycles or oscillations per second and is named after German physicist Heinrich Hertz.
Submitted by: PaperMCQs
38
Physics Easy

What is the unit of power in the SI system?

  • AWatt
  • BJoule
  • CNewton
  • DPascal
Permalink
Correct Answer: Option A — Watt
Explanation: The Watt is the SI unit of power named after James Watt and defined as one joule of energy transferred or converted per second.
Submitted by: PaperMCQs
39
Physics Easy

Which property of a body is measured by the amount of matter it contains?

  • AWeight
  • BDensity
  • CMass
  • DVolume
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Correct Answer: Option C — Mass
Explanation: Mass is the measure of the amount of matter contained in a body and remains constant regardless of location unlike weight which depends on gravitational field strength.
Submitted by: PaperMCQs
40
Physics Easy

What is the SI unit of energy?

  • AJoule
  • BWatt
  • CNewton
  • DPascal
Permalink
Correct Answer: Option A — Joule
Explanation: The Joule is the SI unit of energy defined as the work done when a force of one Newton moves an object one metre in the direction of the force.
Submitted by: PaperMCQs
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