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JEE Main 2022 (Online) 30th June Morning Shift
Numerical
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-1
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Eight similar drops of mercury are maintained at 12 V each. All these spherical drops combine into a single big drop. The potential energy of bigger drop will be ____________ E. Where E is the potential energy of a single smaller drop.

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JEE Main 2022 (Online) 30th June Morning Shift
Numerical
+4
-1
Out of Syllabus
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The circuit diagram of potentiometer used to measure the internal resistance of a cell (E) is shown in figure. The key 'K' is kept closed so as to send constant current through potentiometer wire. When key 'K1' is kept open the null point is found to be at 120 cm on the potentiometer wire. When the key 'K1' is closed the null point is shifted at 80 cm at the potentiometer wire. The internal resistance of the given cell is _____________ $$\Omega$$.

JEE Main 2022 (Online) 30th June Morning Shift Physics - Current Electricity Question 98 English

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3
JEE Main 2022 (Online) 30th June Morning Shift
Numerical
+4
-1
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A series LCR circuit with $$R = {{250} \over {11}}\,\Omega $$ and $${X_L} = {{70} \over {11}}\,\Omega $$ is connected across a 220 V, 50 Hz supply. The value of capacitance needed to maximize the average power of the circuit will be _________ $$\mu$$F. (Take : $$\pi = {{22} \over 7}$$)

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4
JEE Main 2022 (Online) 30th June Morning Shift
Numerical
+4
-1
Change Language

The refractive index of an equilateral prism is $$\sqrt 2 $$. The angle of emergence under minimum deviation position of prism, in degree, is ___________.

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