Units and Measurements NEET PYQs (1988–2026)

Solved Units and Measurements PYQs

3 recent questions with answers. The full set of 76 is free to practise.

1. NEET 2026MediumBasics of Units
   Q1

   The speed of light in vacuum is taken as unity. If light takes 6 min 40 s to reach the Earth from the Sun, the distance between the Sun and the Earth in new unit is:

   • A$3\times 10^8$
   • B500
   • C$3\times 10^{10}$
   • D400

   Show answer & solution

   Correct answer: (D)

   Time, $t=6$ min 40 s $=360+40=400$ s. Distance in new system
   
   $d=vt=1\times 400=400$.
2. NEET 2026MediumErrors in Measurement and Significant Figures
   Q2

   Each side of a metallic cube of mass 5.580 kg is measured to be $9.0\text{cm}$. Keeping the significant figures in view, the density of the material of the cube can be best expressed as $X\times 10^3{\text{kg m}}^{-3}$ where the value of $X$ is:

   • A7.654
   • B7.6
   • C7.65
   • D7.7

   Show answer & solution

   Correct answer: (D)

   Density $=\frac{5.580}{(9.0{)}^3}\times 10^6$ kg/m³
   
   $=0.007654321\times 10^6=7.654\times 10^3$ kg/m³. With significant figures (side has 2 sig figs), density should have 2 sig
   
   figs: $7.7\times 10^3$ kg/m³, so $X=7.7$.
3. NEET 2026MediumVernier Calipers and Screw Gauge
   Q3

   One main scale division of a Vernier calliper is equal to $1mm$ and the number of divisions on the Vernier scale is 10. When both the jaws touch each other, the Vernier scale shifts to the left of zero of the main scale in such a way that $4^{th}$ Vernier division coincides with a division of the main scale. If this Vernier calliper measures the length of the wire to be $1cm$, the actual length of the wire is:

   • A$0.60cm$
   • B$0.96cm$
   • C$1.00cm$
   • D$1.04cm$

   Show answer & solution

   Correct answer: (A)

   A

Topic-wise question count

Where NEET has asked from Units and Measurements, most frequent first.

• Dimensions and Dimensional Analysis41
• Errors in Measurement and Significant Figures17
• Vernier Calipers and Screw Gauge9
• Basics of Units8
• Hard1

Year-wise Units and Measurements questions in NEET

Number of questions from this chapter in each year's paper(s).