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NEET Physics Units and Measurements Questions with Solutions

Solve NEET Physics Units and Measurements questions with solutions, answers, important MCQs, PYQs and online practice tests on PrepMocker.

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Attempt a question independently before reading its solution. This helps you recognise the correct method, formula and calculation steps.

Solved Questions

NEET Physics Units and Measurements Questions with Solutions

These sample questions explain the method behind the answer and are useful for quick revision.

Question 1: Which of the following is an SI base quantity?

(A) Force   (B) Energy   (C) Electric current   (D) Pressure

Solution: (C) Electric current. Electric current is an SI base quantity. Force, energy and pressure are derived quantities because they can be expressed using base quantities.

Question 2: The dimensional formula of velocity is:

(A) [LT⁻¹]   (B) [LT⁻²]   (C) [MLT⁻¹]   (D) [ML²T⁻²]

Solution: (A) [LT⁻¹]. Velocity is displacement divided by time. Since displacement has dimension L and time has dimension T, velocity has dimensions [LT⁻¹].

Question 3: The number of significant figures in 0.00450 is:

(A) 2   (B) 3   (C) 4   (D) 5

Solution: (B) 3. Leading zeroes are not significant. The digits 4 and 5 are significant, and the final zero is significant because it appears after a decimal point.

Question 4: If a quantity is given by Q = AB², and the percentage errors in A and B are 2% and 3%, respectively, the maximum percentage error in Q is:

(A) 5%   (B) 6%   (C) 8%   (D) 11%

Solution: (C) 8%. For Q = AB², the maximum percentage error is the percentage error in A plus twice the percentage error in B: 2% + 2 × 3% = 8%.

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Important Topics

NEET Units and Measurements Important Topics

Revise these areas before attempting more NEET Physics Units and Measurements questions with solutions.

SI units

Revise base units, derived units, prefixes and common unit conversions.

Dimensions

Practise dimensional formulae and dimensional consistency of equations.

Dimensional analysis

Use dimensions to check equations and solve conversion-based questions.

Significant figures

Learn the rules for counting and applying significant figures correctly.

Errors in measurement

Understand absolute, relative, percentage and propagated errors.

Unit conversion

Practise converting quantities between different systems and prefixes.

Practice Better

How to Use Questions with Solutions

A solution is most useful when you compare it with your own method, not when you read it first.

Before viewing the solution

  • Read the question and identify the topic
  • Write the relevant formula or definition
  • Check units before starting a calculation
  • Attempt every step independently
  • Mark questions where you are unsure

After viewing the solution

  • Compare your approach with the method shown
  • Identify the exact step where you made an error
  • Note formula, unit and calculation mistakes
  • Reattempt the question without looking
  • Review similar NEET Units and Measurements MCQs
PYQ Practice

NEET Physics Units and Measurements Previous Year Questions

Solving NEET Physics Units and Measurements previous year questions and NEET Units and Measurements PYQ helps you understand recurring concepts and question patterns.

TopicWhat to reviseSolution focus
UnitsBase units, derived units and prefixesIdentify the correct unit logically
DimensionsDimensional formulae and consistencyBreak quantities into base dimensions
ErrorsAbsolute, relative and percentage errorsApply the correct error-propagation rule
Significant figuresRules in mathematical operationsCheck rounding and final representation
Preparation Strategy

How to Prepare NEET Units and Measurements

Follow a simple routine of concept revision, question solving, solution review and mock-test practice.

Before solving questions

  • Revise SI units and prefixes
  • Learn important dimensional formulae
  • Review significant-figure rules
  • Understand types of measurement errors
  • Keep a short formula sheet

After reviewing solutions

  • Mark incorrect and guessed questions
  • Write down the recurring mistake type
  • Revise the related weak concept
  • Reattempt wrong questions after revision
  • Take a timed online test regularly
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FAQ

NEET Physics Units and Measurements Solutions FAQ

Common questions about answers, solutions, PYQs and online practice.

PrepMocker provides NEET Physics Units and Measurements questions with solutions, answers, important MCQs, PYQs and online practice resources.

The questions cover SI units, dimensions, dimensional analysis, significant figures, errors in measurement and unit conversions.

Solutions help students understand the correct method, verify formula selection, identify calculation mistakes and learn a better approach for similar questions.

Yes, PrepMocker provides free online practice resources and mock-test access for NEET Units and Measurements.

Revise key formulae and rules, solve topic-wise MCQs and important questions, study solutions carefully, practise PYQs, analyse mistakes and take online tests.