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Class XI

PHYSICS

Ch- 14 - OSCILLATIONS

HOME ASSIGNMENTS

1.
A particle is executing S.H.M of amplitude a with a time-period T sec. The time taken by it
to move from positive extreme position to half the amplitude is

a. T/12 sec.

b. 2T/12 sec.

c. 3T/12 sec.

d. 6T/12 sec.

2.
If the period of oscillation of mass M suspended from a spring is 2 s, then the period of
mass 4M will be

a. 1 s.

b. 2 s.

c. 3 s.

d. 4 s.

3.
Two points P and Q perform S.H.M along the same straight line, with the same amplitude ‘a’
and the same frequency n. The greatest distance between P and Q noticed by an observer
studying the motion is found to be “a”. Hence, we can deduce that in this case P leads Q by a
phase angle of

a.
b. 2 /3

c. /2
d. /3

4. One-fourth length of a spring of force constant k is cut away. The force constant of the remaining
spring will be

a. (3/4) k

b. (4/3) k

c. K
d. 4k

5. If x is the displacement of a particle executing simple harmonic motion, then the total energy of the
particle is

a. proportional to x.