1
JEE Main 2021 (Online) 25th February Morning Shift
MCQ (Single Correct Answer)
+4
-1
If the time period of a two meter long simple pendulum is 2s, the acceleration due to gravity at the place where pendulum is executing S.H.M. is :
A
16 m/s2
B
2$$\pi$$2 ms$$-$$2
C
$$\pi$$2 ms$$-$$2
D
9.8 ms$$-$$2
2
JEE Main 2021 (Online) 24th February Evening Shift
MCQ (Single Correct Answer)
+4
-1
In the given figure, a body of mass M is held between two massless springs, on a smooth inclined plane. The free ends of the springs are attached to firm supports. If each spring has spring constant k, the frequency of oscillation of given body is :

A
$${1 \over {2\pi }}\sqrt {{{2k} \over {Mg\sin \alpha }}}$$
B
$${1 \over {2\pi }}\sqrt {{k \over {Mg\sin \alpha }}}$$
C
$${1 \over {2\pi }}\sqrt {{{2k} \over M}}$$
D
$${1 \over {2\pi }}\sqrt {{k \over {2M}}}$$
3
JEE Main 2021 (Online) 24th February Evening Shift
MCQ (Single Correct Answer)
+4
-1
When a particle executes SHM, the nature of graphical representation of velocity as a function of displacement is :
A
circular
B
straight line
C
parabolic
D
elliptical
4
JEE Main 2021 (Online) 24th February Evening Shift
MCQ (Single Correct Answer)
+4
-1
The period of oscillation of a simple pendulum is $$T = 2\pi \sqrt {{L \over g}}$$. Measured value of 'L' is 1.0 m from meter scale having a minimum division of 1 mm and time of one complete oscillation is 1.95 s measured from stopwatch of 0.01 s resolution. The percentage error in the determination of 'g' will be :
A
1.30%
B
1.33%
C
1.13%
D
1.03%
EXAM MAP
Medical
NEET
Graduate Aptitude Test in Engineering
GATE CSEGATE ECEGATE EEGATE MEGATE CEGATE PIGATE IN
Civil Services
UPSC Civil Service
CBSE
Class 12