1
JEE Main 2024 (Online) 30th January Morning Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

At which temperature the r.m.s. velocity of a hydrogen molecule equal to that of an oxygen molecule at $$47^{\circ} \mathrm{C}$$ ?

A
20 K
B
80 K
C
4 K
D
$$-73$$ K
2
JEE Main 2024 (Online) 30th January Morning Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

Match List I with List II.

List I List II
(A) Coefficient of viscosity (I) $$\left[\mathrm{M} \mathrm{L}^2 \mathrm{~T}^{-2}\right]$$
(B) Surface tension (II) $$\left[\mathrm{M} \mathrm{L}^2 \mathrm{~T}^{-1}\right]$$
(C) Angular momentum (III) $$\left[\mathrm{M} \mathrm{L}^{-1} \mathrm{~T}^{-1}\right]$$
(D) Rotational kinetic energy (IV) $$\left[\mathrm{M} \mathrm{L}^0 \mathrm{~T}^{-2}\right]$$

Choose the correct answer from the options given below :

A
(A)-(II), (B)-(I), (C)-(IV), (D)-(III)
B
(A)-(I), (B)-(II), (C)-(III), (D)-(IV)
C
(A)-(IV), (B)-(III), (C)-(II), (D)-(I)
D
(A)-(III), (B)-(IV), (C)-(II), (D)-(I)
3
JEE Main 2024 (Online) 30th January Morning Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

A potential divider circuit is shown in figure. The output voltage V$$_0$$ is :

JEE Main 2024 (Online) 30th January Morning Shift Physics - Current Electricity Question 27 English

A
2 mV
B
4 V
C
0.5 V
D
12 mV
4
JEE Main 2024 (Online) 30th January Morning Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

A Zener diode of breakdown voltage $$10 \mathrm{~V}$$ is used as a voltage regulator as shown in the figure. The current through the Zener diode is :

JEE Main 2024 (Online) 30th January Morning Shift Physics - Semiconductor Question 12 English

A
0
B
30 mA
C
20 mA
D
50 mA
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