1
JEE Main 2023 (Online) 15th April Morning Shift
MCQ (Single Correct Answer)
+4
-1
Change Language
A thermodynamic system is taken through cyclic process. The total work done in the process is :

JEE Main 2023 (Online) 15th April Morning Shift Physics - Heat and Thermodynamics Question 48 English
A
$100 \mathrm{~J}$
B
Zero
C
$300 \mathrm{~J}$
D
$200 \mathrm{~J}$
2
JEE Main 2023 (Online) 15th April Morning Shift
MCQ (Single Correct Answer)
+4
-1
Change Language
Given below are two statements:

Statement I : The equivalent resistance of resistors in a series combination is smaller than least resistance used in the combination.

Statement II : The resistivity of the material is independent of temperature.

In the light of the above statements, choose the correct answer from the options given below :
A
Statement I is true but Statement II is false
B
Both Statement I and Statement II are true
C
Both Statement I and Statement II are false
D
Statement I is false but Statement II is true
3
JEE Main 2023 (Online) 15th April Morning Shift
MCQ (Single Correct Answer)
+4
-1
Change Language
Match List I with List II of Electromagnetic waves with corresponding wavelength range :

List I List II
(A) Microwave (I) $400 \mathrm{~nm}$ to $1 \mathrm{~nm}$
(B) Ultraviolet (II) $1 \mathrm{~nm}$ to $10^{-3} \mathrm{~nm}$
(C) X-Ray (III) $1 \mathrm{~mm}$ to $700 \mathrm{~nm}$
(D) Infra-red (IV) $0.1 \mathrm{~m}$ to $1 \mathrm{~mm}$

Choose the correct answer from the options given below:
A
(A)-(I), (B)-(IV), (C)-(II), (D)-(III)
B
(A)-(IV), (B)-(I), (C)-(II), (D)-(III)
C
(A)-(IV), (B)-(I), (C)-(III), (D) -(II)
D
(A)-(IV), (B)-(II), (C)-(I), (D)-(III)
4
JEE Main 2023 (Online) 15th April Morning Shift
MCQ (Single Correct Answer)
+4
-1
Change Language
A flask contains Hydrogen and Argon in the ratio $2: 1$ by mass. The temperature of the mixture is $30^{\circ} \mathrm{C}$. The ratio of average kinetic energy per molecule of the two gases ( $\mathrm{K}$ argon/K hydrogen) is :

(Given: Atomic Weight of $\mathrm{Ar}=39.9$ )
A
$\frac{39.9}{2}$
B
2
C
39.9
D
1
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