1
MHT CET (PCB) 2024 22th April Morning Shift
MCQ (Single Correct Answer)
+1
-0

A particle of mass ' m ' is executing S.H.M. about the origin on $x$-axis with frequency $\sqrt{\frac{\mathrm{ka}}{\pi \mathrm{m}}}$, where ' $k$ ' is a constant and ' $a$ ' is the amplitude of S.H.M. If ' x ' is a displacement of a particle, at time ' $t$ ', potential energy of the particle will be

A
$\frac{1}{2} \mathrm{kax}^2$
B
$\pi \mathrm{kax}^2$
C
$2 \pi \mathrm{kax}^2$
D
$2 \mathrm{kax}^2$
2
MHT CET (PCB) 2024 22th April Morning Shift
MCQ (Single Correct Answer)
+1
-0
A satellite is revolving round the earth with orbital speed ' $\mathrm{V}_0$ '. If it stops suddenly, the speed with which it will strike the surface of the earth would be ( $\mathrm{V}_{\mathrm{e}}=$ escape velocity of a particle on earth's surface)
A
$\frac{\mathrm{V}_{\mathrm{c}}^2}{\mathrm{~V}_0}$
B
$\quad 2 \mathrm{~V}_0$
C
$\sqrt{V_e^2-V_0^2}$
D
$\sqrt{\mathrm{V}_{\mathrm{e}}^2-2 \mathrm{~V}_0^2}$
3
MHT CET (PCB) 2024 22th April Morning Shift
MCQ (Single Correct Answer)
+1
-0

The angular momentum of electron in hydrogen atom in first orbit is ' $L$ '. The change in angular momentum if electron is in second orbit of hydrogen atom is

A
2 L
B
L
C
$\frac{\mathrm{L}}{2}$
D
4 L
4
MHT CET (PCB) 2024 22th April Morning Shift
MCQ (Single Correct Answer)
+1
-0

Four point masses, each of mass ' $m$ ' are arranged in $X-Y$ plane as shown in the figure. The moment of inertia of this system about $X$-axis is

MHT CET (PCB) 2024 22th April Morning Shift Physics - Rotational Motion Question 4 English
A
$3 \mathrm{ma}^2$
B
$5 \mathrm{ma}^2$
C
$4 \mathrm{ma}^2$
D
$6 \mathrm{ma}^2$
EXAM MAP