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Saturday, 31 October

JEE Main · Maths · Vector Algebra

Unit Normal Vector Calculation

JEE Main asked Unit Normal Vector Calculation 2 times in 2 of the 108 shifts Lumi analysed, in 2021 and 2023. It belongs to Cross Product, in Vector Algebra (Maths). The longest wait between two years asking it was 2 years.

Updated 2026-10-24

Times asked
2
in 2 shifts
Years
2 of 8
First asked
2021
last in 2023
Pattern
Occasional
across the analysed shifts

Questions on this idea a shift, by year

2017–2026. Asked in 2021 and 2023. Years differ in how many shifts Lumi analysed, so each year is scaled to one shift of 25 Maths questions.

00.050.10’170’200.03’210’220.07’230’240’250’26

Raw count: 2017: 0 in 1 shift · 2020: 0 in 12 shifts · 2021: 1 in 24 shifts · 2022: 0 in 24 shifts · 2023: 1 in 12 shifts · 2024: 0 in 18 shifts · 2025: 0 in 8 shifts · 2026: 0 in 9 shifts.

Shift by shift

Each square is one analysed shift, in date order. Open a filled one for that paper.

  • 20260 of 9
  • 20250 of 8
  • 20240 of 18
  • 20231 of 12
  • 20220 of 24
  • 20211 of 24
  • 20200 of 12
  • 20170 of 1

Asked in that shift More than once Not asked

How JEE Main framed it

Numerical value is the usual form. Skill tested: calculation.

  • Vector perpendicular to two given
  • Vector perpendicular to two given vectors

Difficulty

Easy 1Medium 1Hard 0

1 of the 2 questions had a numerical answer.

Every question

All 2 questions

From the official JEE Main shift papers, newest first. Open one for the full question, the options and the official answer.

  1. 10 Apr 2023, Shift 2 · Q16Let a⃗=2i^+7j^−k^, b⃗=3i^+5k^\vec{a} = 2\hat{i} + 7\hat{j} - \hat{k},\ \vec{b} = 3\hat{i} + 5\hat{k} and c⃗=i^−j^+2k^\vec{c} = \hat{i} - \hat{j} + 2\hat{k}. Let d⃗\vec{d}…MediumSingle correct
  2. 25 Jul 2021, Shift 1 · Q82Let p⃗=2i^+3j^+k^\vec{p}=2\hat{i}+3\hat{j}+\hat{k} and q⃗=i^+2j^+k^\vec{q}=\hat{i}+2\hat{j}+\hat{k} be two vectors. If a vector…EasyNumerical value

Shifts: 25 Jul 2021, Shift 1, 10 Apr 2023, Shift 2.

Same topic

Other ideas in Cross Product

Cross Product has 13 ideas JEE Main has asked; 9 of them came up in more than one question.

Topic analysisChapter analysisStudy this chapterAll repeated ideas