1
NEET 2025
MCQ (Single Correct Answer)
+4
-1
Change Language

The kinetic energies of two similar cars $A$ and $B$ are 100 J and 225 J respectively. On applying breaks, car $A$ stops after 1000 m and car $B$ stops after 1500 m . If $F_A$ and $F_B$ are the forces applied by the breaks on cars $A$ and $B$ respectively, then the ratio of $\frac{F_A}{F_B}$ is

A
$\frac{1}{3}$
B
$\frac{1}{2}$
C
$\frac{3}{2}$
D
$\frac{2}{3}$
2
NEET 2025
MCQ (Single Correct Answer)
+4
-1
Change Language

A bob of heavy mass $m$ is suspended by a light string of length $/$. The bob is given a horizontal velocity $v_0$ as shown in figure. If the string gets slack at some point $P$ making an angle $\theta$ from the horizontal, the ratio of the speed $v$ of the bob at point $P$ to its initial speed $v_0$ is:

NEET 2025 Physics - Work, Energy and Power Question 1 English

A
$\left(\frac{\cos \theta}{2+3 \sin \theta}\right)^{\frac{1}{2}}$
B
$\left(\frac{\sin \theta}{2+3 \sin \theta}\right)^{\frac{1}{2}}$
C
$(\sin \theta)^{\frac{1}{2}}$
D
$\left(\frac{1}{2+3 \sin \theta}\right)^{\frac{1}{2}}$
3
NEET 2024 (Re-Examination)
MCQ (Single Correct Answer)
+4
-1
Change Language

An object moving along horizontal $$x$$-direction with kinetic energy $$10 \mathrm{~J}$$ is displaced through $$x=(3 \hat{i}) \mathrm{m}$$ by the force $$\vec{F}=(-2 \hat{i}+3 \hat{j}) \mathrm{N}$$. The kinetic energy of the object at the end of the displacement $$x$$ is

A
$$10 \mathrm{~J}$$
B
$$16 \mathrm{~J}$$
C
$$4 \mathrm{~J}$$
D
$$6 \mathrm{~J}$$
4
NEET 2024 (Re-Examination)
MCQ (Single Correct Answer)
+4
-1
Change Language

An object falls from a height of $$10 \mathrm{~m}$$ above the ground. After striking the ground it loses $$50 \%$$ of its kinetic energy. The height upto which the object can rebounce from the ground is:

A
$$7.5 \mathrm{~m}$$
B
$$10 \mathrm{~m}$$
C
$$2.5 \mathrm{~m}$$
D
$$5 \mathrm{~m}$$
NEET Subjects
EXAM MAP