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JEE Main 2021 (Online) 22th July Evening Shift
Numerical
+4
-1
Out of Syllabus
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In 5 minutes, a body cools from 75$$^\circ$$C to 65$$^\circ$$C at room temperature of 25$$^\circ$$C. The temperature of body at the end of next 5 minutes is _________$$^\circ$$ C.
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2
JEE Main 2021 (Online) 22th July Evening Shift
Numerical
+4
-1
Change Language
In a given circuit diagram, a 5 V zener diode along with a series resistance is connected across a 50 V power supply. The minimum value of the resistance required, if the maximum zener current is 90 mA will be __________ $$\Omega$$.

JEE Main 2021 (Online) 22th July Evening Shift Physics - Semiconductor Question 85 English
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3
JEE Main 2021 (Online) 22th July Evening Shift
Numerical
+4
-1
Change Language
The total charge enclosed in an incremental volume of 2 $$\times$$ 10$$-$$9 m3 located at the origin is ___________ nC, if electric flux density of its field is found as

D = e$$-$$x sin y $$\widehat i$$ $$-$$ e$$-$$x cos y $$\widehat j$$ + 2z $$\widehat k$$ C/m2
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4
JEE Main 2021 (Online) 22th July Evening Shift
Numerical
+4
-1
Change Language
The position of the centre of mass of a uniform semi-circular wire of radius 'R' placed in x-y plane with its centre at the origin and the line joining its ends as x-axis is given by $$\left( {0,{{xR} \over \pi }} \right)$$. Then, the value of | x | is ______________.
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