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NEET UG Unit 2B: Friction, Gravitational and Normal Forces — practice questions — page 3

Explore 78 free Unit 2B: Friction, Gravitational and Normal Forces questions in NEET UG Physics. Open each question or exercise to read its content, reference answers and available explanation.

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Unit 2B: Friction, Gravitational and Normal Forces questions and exercises with answers

Showing questions 61–78 of 78.

As per your syllabus, the dimensional formula of ENERGY (joule) is which?Read the answer and worked solution →As per your syllabus, the dimensional formula of MASS DENSITY is which?Read the answer and worked solution →As per your syllabus, the dimensional formula of VELOCITY is which?Read the answer and worked solution →As per your syllabus, two physical quantities can be added or subtracted only if which condition holds?Read the answer and worked solution →As per your syllabus, Ex 1.4, which formula for kinetic energy is dimensionally INCORRECT?Read the answer and worked solution →As per your syllabus, a DIMENSIONALLY CORRECT equation is necessarily which?Read the answer and worked solution →As per your syllabus, Ex 1.5, the period of a simple pendulum T derived from dimensional analysis (l, g, m) gives which form?Read the answer and worked solution →As per your syllabus, the dimensions of PRESSURE are which?Read the answer and worked solution →As per your syllabus, ANGLE has which dimensions, since it is the ratio of two lengths (arc/radius)?Read the answer and worked solution →As per your syllabus, eqn 6.1, the centre of mass of two particles m₁ at x₁ and m₂ at x₂ is which?Read the answer and worked solution →As per your syllabus, the centre of mass of THREE equal masses placed at the vertices of a triangle lies at which point?Read the answer and worked solution →As per your syllabus, the centre of mass of a UNIFORM (homogeneous) symmetric body lies at which location?Read the answer and worked solution →As per your syllabus, eqn 6.11, the equation of motion of the centre of mass of a system of particles is which?Read the answer and worked solution →As per your syllabus, the total LINEAR MOMENTUM of a system of particles equals which?Read the answer and worked solution →As per your syllabus, if F_ext on the system is zero, the total linear momentum of the system does which?Read the answer and worked solution →As per your syllabus, the CM of a continuous distribution is given by which integral?Read the answer and worked solution →As per your syllabus, a rigid body's general motion can be decomposed into which two kinds?Read the answer and worked solution →As per your syllabus, when the origin of coordinates is chosen at the centre of mass, what does Σ m_i r_i equal?Read the answer and worked solution →

Worked practice questions

As per your syllabus, the dimensional formula of ENERGY (joule) is which?

  1. [M L T⁻²]
  2. [M L⁻² T⁻²]
  3. [M L² T⁻¹]
  4. [M L² T⁻²]
Show answer and solution

Correct answer: D. [M L² T⁻²]

syllabus Ex 1.4: energy = F × distance = [M L T⁻²][L] = [M L² T⁻²].

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As per your syllabus, the dimensional formula of MASS DENSITY is which?

  1. [M L]
  2. [M L⁻²]
  3. [M L⁻³]
  4. [M L⁻¹]
Show answer and solution

Correct answer: C. [M L⁻³]

Your syllabus: density = mass/volume = [M]/[L³] = [M L⁻³].

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As per your syllabus, the dimensional formula of VELOCITY is which?

  1. [L² T⁻¹]
  2. [L T⁻¹]
  3. [L T]
  4. [L T⁻²]
Show answer and solution

Correct answer: B. [L T⁻¹]

Your syllabus: velocity = length/time = [L T⁻¹]. Acceleration is [L T⁻²].

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