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JEE Main 2022 (Online) 28th June Evening Shift
Numerical
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In the given circuit, the magnitude of VL and VC are twice that of VR. Given that f = 50 Hz, the inductance of the coil is $${1 \over {K\pi }}$$ mH. The value of K is ____________.

JEE Main 2022 (Online) 28th June Evening Shift Physics - Alternating Current Question 44 English

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2
JEE Main 2022 (Online) 28th June Evening Shift
Numerical
+4
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All resistances in figure are 1 $$\Omega$$ each. The value of current 'I' is $${a \over 5}$$ A. The value of a is _________.

JEE Main 2022 (Online) 28th June Evening Shift Physics - Current Electricity Question 94 English

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3
JEE Main 2022 (Online) 28th June Evening Shift
Numerical
+4
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A capacitor C1 of capacitance 5 $$\mu$$F is charged to a potential of 30 V using a battery. The battery is then removed and the charged capacitor is connected to an uncharged capacitor C2 of capacitance 10 $$\mu$$F as shown in figure. When the switch is closed charge flows between the capacitors. At equilibrium, the charge on the capacitor C2 is __________ $$\mu$$C.

JEE Main 2022 (Online) 28th June Evening Shift Physics - Capacitor Question 42 English

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4
JEE Main 2022 (Online) 28th June Evening Shift
Numerical
+4
-1
Change Language

A tunning fork of frequency 340 Hz resonates in the fundamental mode with an air column of length 125 cm in a cylindrical tube closed at one end. When water is slowly poured in it, the minimum height of water required for observing resonance once again is ___________ cm.

(Velocity of sound in air is 340 ms$$-$$1)

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