alleryAs per your syllabus, the number 2.746 rounded to THREE significant figures is which?
- 2.7
- 2.76
- 2.74
- 2.75
Show answer and solution
Correct answer: D. 2.75
Your syllabus: digit to drop is 6 > 5, so preceding digit (4) is raised → 2.75.
JEE Main Unit 2B: Friction, Gravitational and Normal Forces — practice questions — page 2
Explore 57 free Unit 2B: Friction, Gravitational and Normal Forces questions in JEE Main Physics. Open each question or exercise to read its content, reference answers and available explanation.
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Showing questions 31–57 of 57.
As per your syllabus, the number 2.746 rounded to THREE significant figures is which?Read the answer and worked solution →As per your syllabus, the number 2.745 rounded to THREE significant figures is which?Read the answer and worked solution →As per your syllabus, the number 2.735 rounded to THREE significant figures becomes which?Read the answer and worked solution →As per your syllabus, Ex 1.1, the surface area of a cube of side 7.203 m to appropriate significant figures is which?Read the answer and worked solution →As per your syllabus, Ex 1, the area of a rectangle 16.2 cm × 10.1 cm with each ±0.1 cm uncertainty is approximately which?Read the answer and worked solution →As per your syllabus, the relative error in a measurement of 1.02 g with ±0.01 g uncertainty is approximately which percentage?Read the answer and worked solution →As per your syllabus, in 12.9 g − 7.06 g (each to 3 significant figures), the result must be reported as which?Read the answer and worked solution →As per your syllabus, in multi-step calculations one should retain how many EXTRA digits in intermediate steps?Read the answer and worked solution →As per your syllabus, the dimensional formula of FORCE is which?Read the answer and worked solution →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 number 2.745 rounded to THREE significant figures is which?
- 2.74
- 2.75
- 2.76
- 2.7
Show answer and solution
Correct answer: A. 2.74
Your syllabus: dropped digit is 5 and preceding 4 is even
→ drop unchanged → 2.74. If preceding were odd, round up.
As per your syllabus, the number 2.735 rounded to THREE significant figures becomes which?
- 2.735
- 2.73
- 2.74
- 2.7
Show answer and solution
Correct answer: C. 2.74
Your syllabus: dropped 5, preceding 3 is odd → raise by 1 → 2.74.
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