1
JEE Main 2022 (Online) 24th June Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

Identify the pair of physical quantities that have same dimensions:

A
velocity gradient and decay constant
B
Wien's constant and Stefan constant
C
angular frequency and angular momentum
D
wave number and Avogadro number
2
JEE Main 2022 (Online) 24th June Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

The distance between Sun and Earth is R. The duration of year if the distance between Sun and Earth becomes 3R will be :

A
$$\sqrt 3 $$ years
B
3 years
C
9 years
D
3$$\sqrt 3 $$ years
3
JEE Main 2022 (Online) 24th June Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

A stone of mass m, tied to a string is being whirled in a vertical circle with a uniform speed. The tension in the string is

A
the same throughout the motion.
B
minimum at the highest position of the circular path.
C
minimum at the lowest position of the circular path.
D
minimum when the rope is in the horizontal position.
4
JEE Main 2022 (Online) 24th June Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

Two identical charged particles each having a mass 10 g and charge 2.0 $$\times$$ 10$$-$$7C are placed on a horizontal table with a separation of L between them such that they stay in limited equilibrium. If the coefficient of friction between each particle and the table is 0.25, find the value of L. [Use g = 10 ms$$-$$2]

A
12 cm
B
10 cm
C
8 cm
D
5 cm
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