1
JEE Main 2018 (Online) 16th April Morning Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
In the given circuit, the current through zener diode is :

JEE Main 2018 (Online) 16th April Morning Slot Physics - Semiconductor Question 153 English
A
5.5 mA
B
6.7 mA
C
2.5 mA
D
3.3 mA
2
JEE Main 2018 (Online) 16th April Morning Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
One mole of an ideal monoatomic gas is taken along the path ABCA as show in the PV diagram. The maximum temperature attained by the gas along the path BC is given by :

JEE Main 2018 (Online) 16th April Morning Slot Physics - Heat and Thermodynamics Question 307 English
A
$${{25} \over {16}}\,{{{P_o}{V_o}} \over R}$$
B
$${{25} \over {8}}\,{{{P_o}{V_o}} \over R}$$
C
$${{25} \over {4}}\,{{{P_o}{V_o}} \over R}$$
D
$${{5} \over {8}}\,{{{P_o}{V_o}} \over R}$$
3
JEE Main 2018 (Online) 16th April Morning Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
In the following circuit, the switch S is closed at t = 0. The charge on the capacitor C1 as a function of time will be given by $$\left( {{C_{eq}} = {{{C_1}{C_2}} \over {{C_1} + {C_2}}}} \right)$$

JEE Main 2018 (Online) 16th April Morning Slot Physics - Capacitor Question 114 English
A
$${C_1}E\left[ {1 - \exp \left( { - tR/{C_1}} \right)} \right]$$
B
$${C_2}E\left[ {1 - \exp \left( { - t/R{C_2}} \right)} \right]$$
C
$${C_{eq}}E\left[ {1 - \exp \left( { - t/R{C_{eq}}} \right)} \right]$$
D
$${C_{eq}}E\,\,\exp \left( { - t/R{C_{eq}}} \right)$$
4
JEE Main 2018 (Online) 16th April Morning Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
A thin circular disk is in the xy plane as shown in the figure. The ratio of its moment of inertia about z and z' axes will be :

JEE Main 2018 (Online) 16th April Morning Slot Physics - Rotational Motion Question 165 English
A
1 : 3
B
1 : 4
C
1 : 5
D
1 : 2
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