JEE Main 2024 Question Paper (04-Apr-2024) (Shift 2)

Question 1

The translational degrees of freedom $ \left(f_{\mathrm{t}}\right) $ and rotational degrees of freedom $ \left(f_{\mathrm{r}}\right) $ of the $ \mathrm{CH}_4 $ molecule are :

Accepted Answer

$ f_{t} = 3 $ and $ f_{r} = 3 $

Answer

f$_{t}$ = 2 and f$_{r}$ = 2

Answer

f$_{t}$ = 3 and f$_{r}$ = 2

Answer

f$_{t}$ = 2 and f$_{r}$ = 3

Question 2

A cyclist starts from the point $P$ of a circular ground of radius $2 \ \mathrm{km}$ and travels along its circumference to the point $S.$ The displacement of the cyclist is :

Accepted Answer

$\sqrt{8} \quad \mathrm{km}$

Answer

$6 \quad \mathrm{km}$

Answer

$4 \quad \mathrm{km}$

Answer

$8 \quad \mathrm{km}$

Question 3

The magnetic moment of a bar magnet is $0.5 \ \mathrm{A} \ \mathrm{m}^2$. It is suspended in a uniform magnetic field of $8 	imes 10^{-2} \ \mathrm{T}$. The work done in rotating it from its most stable to most unstable position is :

Accepted Answer

$\quad 8 \quad 	imes \quad 10^{-2} \quad \mathrm{J} \quad$

Answer

$16 	imes 10^{-2} \ \mathrm{J}$

Answer

$\quad 4 \quad 	imes \quad 10^{-2} \quad \mathrm{J}$

Answer

$\mathrm{Zero}$

Question 4

Which of the diode circuits shows correct biasing used for the measurement of dynamic resistance of a p-n junction diode:

Accepted Answer

""

Answer

Answer

Answer

Question 5

Arrange the following in the ascending order of wavelength :
(A) Gamma rays $ \left({\lambda }_{1}\right)$
(B) $ x$-ray $ \left({\lambda }_{2}\right)$
(C) Infrared waves $ \left({\lambda }_{3}\right)$
(D) Microwaves $ \left({\lambda }_{4}\right)$

Accepted Answer

$ {\lambda }_{1}<{\lambda }_{2}<{\lambda }_{3}<{\lambda }_{4}$

Answer

$ {\lambda }_{4}<{\lambda }_{3}<{\lambda }_{1}<{\lambda }_{2}$

Answer

$ {\lambda }_{4}<{\lambda }_{3}<{\lambda }_{2}<{\lambda }_{1}$

Answer

$ {\lambda }_{2}<{\lambda }_{1}<{\lambda }_{4}<{\lambda }_{3}$