1
JEE Main 2020 (Online) 4th September Evening Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
A quantity x is given by $$\left( {{{IF{v^2}} \over {W{L^4}}}} \right)$$ in terms of moment of inertia I, force F, velocity v, work W and Length L. The dimensional formula for x is same as that of :
A
Coefficient of viscosity
B
Force constant
C
Energy density
D
Planck's constant
2
JEE Main 2020 (Online) 4th September Morning Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
Dimensional formula for thermal conductivity is (here K denotes the temperature):
A
MLT–3K–1
B
MLT–2K–2
C
MLT–2K
D
MLT–3K
3
JEE Main 2020 (Online) 3rd September Evening Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
Amount of solar energy received on the earth’s surface per unit area per unit time is defined a solar constant. Dimension of solar constant is :
A
MLT–2
B
ML0T–3
C
M2L0T–1
D
ML2T–2
4
JEE Main 2020 (Online) 3rd September Morning Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
Using screw gauge of pitch 0.1 cm and 50 divisions on its circular scale, the thickness of an object is measured. It should correctly be recorded as
A
2.123 cm
B
2.124 cm
C
2.125 cm
D
2.121 cm
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