1
JEE Main 2022 (Online) 25th June Morning Shift
MCQ (Single Correct Answer)
+4
-1
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A teacher in his physics laboratory allotted an experiment to determine the resistance (G) of a galvanometer. Students took the observations for $${1 \over 3}$$ deflection in the galvanometer. Which of the below is true for measuring value of G?

A
$${1 \over 3}$$ deflection method cannot be used for determining the resistance of the galvanometer.
B
$${1 \over 3}$$ deflection method can be used and in this case the G equals to twice the value of shunt resistances.
C
$${1 \over 3}$$ deflection method can be used and in this case, the G equals to three times the value of shunt resistances.
D
$${1 \over 3}$$ deflection method can be used and in this case the G value equals to the shunt resistances.
2
JEE Main 2022 (Online) 25th June Morning Shift
Numerical
+4
-1
Change Language

A uniform chain of 6 m length is placed on a table such that a part of its length is hanging over the edge of the table. The system is at rest. The co-efficient of static friction between the chain and the surface of the table is 0.5, the maximum length of the chain hanging from the table is ___________ m.

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3
JEE Main 2022 (Online) 25th June Morning Shift
Numerical
+4
-1
Change Language

A 0.5 kg block moving at a speed of 12 ms$$-$$1 compresses a spring through a distance 30 cm when its speed is halved. The spring constant of the spring will be _______________ Nm$$-$$1.

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4
JEE Main 2022 (Online) 25th June Morning Shift
Numerical
+4
-1
Change Language

The velocity of upper layer of water in a river is 36 kmh$$-$$1. Shearing stress between horizontal layers of water is 10$$-$$3 Nm$$-$$2. Depth of the river is __________ m. (Co-efficient of viscosity of water is 10$$-$$2 Pa.s)

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