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Saturday, 15 August 2026
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Physics Past Questions and Answers

Topic: Contact

Jamb Physics Questions - Contact

Question 16:
The limiting frictional force between two surface depends on
I. the normal reaction between the surfaces
II. the area of surface in contact
III. the relative velocity between the surfaces
IV. the nature of the surface
  • A I only
  • B I & IV only
  • C II only
  • D III only
View Answer & Explanation
Question 17:
The limiting frictional force between two surface depends on
I. the normal reaction between the surfaces
II. the area of surface in contact
III. the relative velocity between the surfaces
IV. the nature of the surface
  • A I only
  • B I & IV only
  • C II only
  • D III only
View Answer & Explanation
Question 18:
The limiting frictional force between two surfaces depends on
I. the normal reaction between the surfaces
II. the area of surface in contact
III. the relative velocity between the surfaces
IV. the nature of the surfaces
  • A I only
  • B II only
  • C III only
  • D I & IV only
View Answer & Explanation
Question 19:
When the breaks in a car are applied, the frictional force on the tyres is?
  • A A disadvantage because it is in the direction of the motion of the car
  • B A disadvantage because it is in the opposite direction of the motion of the car
  • C An advantage because it is in the direction of the motion of the car
  • D An advantage because it is in the opposite direction of the motion of the car
View Answer & Explanation
Question 20:
The diagram above illustrates the penetrating power of some types of radiation. X, Y and Z are likely
  • A X = α-particle; Y = γ-ray; Z = β-particle
  • B X = α-particle; Y = β-particle; Z = γ-ray
  • C X = γ-ray; Y = α-particle; Z = β-particle
  • D X = β-particle; Y = γ-ray; Z = α-particle
View Answer & Explanation