Physics and Measurement
Units of measurements; SI units, fundamental and derived units; least count, accuracy and precision; significant figures; dimensional analysis and its applications.
Test yourself on Physics and Measurement
5 real JEE Main questions with instant answers — no signup, ~3 minutes.
Study notes are still being prepared.
Don't wait — Shishya can teach you this topic right now, on demand.
Ask Shishya to teach this →Need more? Ask Shishya
Shishya is your personal tutor for this topic. Pick a starter or open a free chat.
- Go deeper on this topicGo deeper on Physics and Measurement for JEE Main — examples and edge cases I should know.
- Show me exam shortcutsGive me 3 fastest shortcuts to solve Physics and Measurement questions in the exam.
- What mistakes should I avoid?What are the most common mistakes students make on Physics and Measurement? How do I avoid them?
- Quiz me adaptivelyQuiz me on Physics and Measurement — start with one easy question, then go harder based on how I answer.
Practice this topic
Take a full mock →Q1 · Physics and Measurement · EASY
A vernier callipers has 20 divisions on the vernier scale which coincide with 19 divisions on the main scale. If each division on the main scale is 1 mm, then the least count of the instrument is:
Q2 · Physics and Measurement · MEDIUM
The dimensional formula of physical quantity X is [M L^2 T^-3 A^-1]. The physical quantity X is:
Q3 · Physics and Measurement · MEDIUM
The length and breadth of a rectangular sheet are measured to be 16.2 cm and 10.1 cm respectively. The area of the sheet with correct number of significant figures is:
Q4 · Physics and Measurement · MEDIUM
Using dimensional analysis, the relation between velocity (v), acceleration (a) and distance (s) can be shown to be v² = k a^x s^y, where k is a dimensionless constant. The values of x and y are:
Q5 · Physics and Measurement · HARD
A physical quantity P is given by P = (A² B³)/(C D^(1/2)), where A, B, C and D are measured quantities. The percentage errors in A, B, C and D are 1%, 2%, 3% and 4% respectively. The percentage error in P is: