1
VITEEE 2022
MCQ (Single Correct Answer)
+1
-0

One end of a spring of force constant $$k$$ is fixed to a vertical wall and other to a body of mass $$m$$ resting on a smooth horizontal surface. There is another wall at a distance $$x_0$$ from the body. The spring is then compressed by $$2 x_0$$ and released. The time taken to stike the wall is

A
$$\frac{\pi}{6} \sqrt{\frac{m}{k}}$$
B
$$\sqrt{\frac{m}{k}}$$
C
$$\frac{2 \pi}{3} \sqrt{\frac{m}{k}}$$
D
$$\frac{\pi}{4} \sqrt{\frac{m}{k}}$$
2
VITEEE 2022
MCQ (Single Correct Answer)
+1
-0

A particle of mass $$m$$ is moving in a horizontal circle of radius $$r$$ under a centripetal force given by $$\left(-k / r^2\right)$$, where $$k$$ is a constant. Then

A
the total energy of the particle is $$(-k / 2 r)$$
B
the kinetic energy of the particle is $$(k / r)$$
C
the potential energy of the particle is $$(k / 2 r)$$
D
the kinetic energy of the particle is $$(-k / r)$$
3
VITEEE 2022
MCQ (Single Correct Answer)
+1
-0

A plane glass mirror of thickness $$3 \mathrm{~cm}$$ of material of $$\mu=\frac{3}{2}$$ is silvered on the back surface. When a point object is placed $$9 \mathrm{~cm}$$ from the front surface of the mirror, then the position of the brightest image from the front surface is

A
9 cm
B
11 cm
C
12 cm
D
13 cm
4
VITEEE 2022
MCQ (Single Correct Answer)
+1
-0

A skylab or mass $$m \mathrm{~kg}$$ is first launched from the surface of the earth in a circular orbit of radius $$2 R$$ (from the centre of the earth) and then it is shifted from this circular orbit to another circular orbit of radius $$3 R$$. The minimum energy required to place the lab in the first orbit and to shift the lab from first orbit to the second orbit are

A
$$\frac{3}{4} m g R, \frac{m g R}{6}$$
B
$$\frac{3}{4} m g R, \frac{m g R}{12}$$
C
$$m g R, m g R$$
D
$$2 m g R, m g R$$
EXAM MAP
Medical
NEETAIIMS
Graduate Aptitude Test in Engineering
GATE CSEGATE ECEGATE EEGATE MEGATE CEGATE PIGATE IN
Civil Services
UPSC Civil Service
Defence
NDA
Staff Selection Commission
SSC CGL Tier I
CBSE
Class 12