Page 1 - WS-1

Class XI

PHYSICS

Chapter-14-OSCILLATIONS

WORKSHEET-1

1.
The period of particle is 8 sec at t = 0 it is as the mean position. The ratio of
st
nd
distances covered by the particle in 1 second and 2 second will be
a. ( - 1) /

b. 1 /

c. 1 / ( - 1)

d. ( - 1)

2.
The amplitude of an oscillating simple pendulum is 10 cm and its period is 4
second. Its speed, one second after it passes its equilibrium position is

a. 10 m/s.

b. 0 m/s.

c. 12 m/s.
d. 5 m/s.

3.
A particle has simple harmonic motion represented by equation x = 5 sin (4t -
/6), where x is the displacement. If the displacement of the particle is 3 units, then
the velocity is
a. 2 / 3

b. 5 / 3

c. 20

d. 16

4.
Two simple harmonic vibrations are represented by the equations y1 = 10 sin (3 t
+ /4) and y2 = 5 sin (3 t + (3) 1/2 Cos 3 t). Their amplitudes are in the ratio of

a. 2:1.

b. 1:1.
c. 3:4.

d. 4:3.

5.
The kinetic energy of a particle at an instant in SHM, which is maximum at the
mean position and minimum at the extreme position, is