1
JEE Main 2022 (Online) 26th June Evening Shift
Numerical
+4
-1
Change Language

A travelling microscope is used to determine the refractive index of a glass slab. If 40 divisions are there in 1 cm on main scale and 50 Vernier scale divisions are equal to 49 main scale divisions, then least count of the travelling microscope is __________ $$\times$$ 10$$-$$6 m.

Your input ____
2
JEE Main 2022 (Online) 26th June Morning Shift
Numerical
+4
-1
Change Language

In a vernier callipers, each cm on the main scale is divided into 20 equal parts. If tenth vernier scale division coincides with nineth main scale division. Then the value of vernier constant will be _________ $$\times$$ 10$$-$$2 mm.

Your input ____
3
JEE Main 2022 (Online) 25th June Evening Shift
Numerical
+4
-1
Change Language

For $$z = {a^2}{x^3}{y^{{1 \over 2}}}$$, where 'a' is a constant. If percentage error in measurement of 'x' and 'y' are 4% and 12% respectively, then the percentage error for 'z' will be _______________%.

Your input ____
4
JEE Main 2022 (Online) 24th June Morning Shift
Numerical
+4
-1
Change Language

A metre scale is balanced on a knife edge at its centre. When two coins, each of mass 10 g are put one on the top of the other at the 10.0 cm mark the scale is found to be balanced at 40.0 cm mark. The mass of the metre scale is found to be x $$\times$$ 10$$-$$2 kg. The value of x is ___________.

Your input ____
JEE Main Subjects
EXAM MAP
Joint Entrance Examination
JEE MainJEE AdvancedWB JEE
Graduate Aptitude Test in Engineering
GATE CSEGATE ECEGATE EEGATE MEGATE CEGATE PIGATE IN
Medical
NEET