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Units, Conversions and Astronomical Distances for JEE: 8 solved questions

Real JEE paper questions on units, conversions and astronomical distances, part of units and measurements. Each opens with the options, the correct answer and a step-by-step solution. Papers run from 2019 to 2026. No sign-in needed to read them.

What this topic asks

• Units and conversions — 8 questions

All 8 questions with solutions

• A new unit (α) of length is chosen such that it is equal to the speed of light in vacuum. What is the distanc… JEE Main 8th April 2nd Shift 2026
• If ε, E and t represent the free space permittivity, electric field and time respectively, then the unit of (… JEE Main 22nd Jan 2nd Shift 2026
• In an expression a×10^b, JEE Main 8th April 1st Shift 2024
• Given below are two statements: Statement I: Astronomical unit (Au), Parsec (Pc) and Light year (ly) are unit… JEE Main 11th April 1st Shift 2023
• The distance of the Sun from Earth is 1.5×10¹¹ m and its angular diameter is 2000 s when observed from the ea… JEE Main 27th June 2nd Shift 2022
• If E and H represents the intensity of electric field and magnetising field respectively, then the unit of E/… JEE Main 27th Aug 1st Shift 2021
• A huge circular arc of length 4.4 ly subtends an angle 4s at the centre of the circle. How long it would take… JEE Main 27th Aug 1st Shift 2021
• The density of a material in SI units is 128 kg m⁻³. In certain units in which the unit of length is 25 cm an… JEE Main 10th Jan 1st Shift 2019