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a. T /2x.
2
b. T /2k.
2
c. 2k/T .
2
d. 2T /k.
2
6.
Two simple pendulums of equal length cross each other at mean position. Their
phase difference is
a. zero.

b. 45 .
o
c. 90 .
o
d. 180 .
o
7.
A spring has a certain mass suspended from it and its period for vertical
oscillations is T1. The spring is now cut into two equal halves and the same mass is
suspended from one of the halves. The period of vertical oscillations is now T2. the
ratio of T2/T1 is

a. 1/2.

b. 1/

c.
d. 2.

8.
Two springs, having spring constants of 25 N/m and 16 N/m are stretched by
forces F1 and F2, have equal potential energy. The ratio of the forces F1 and F2 is

a. 4/5.

b. 5/4.

c. 16/25.
d. 25/16.

9.
Two simple pendulums of length 0.5 m and 2.0 m respectively are given small
linear displacement in one direction at the same time. They will again be in the
phase when the pendulum of shorter length has completed oscillations

a. 5.

b. 3.
c. 2.

d. 1.

10.
A simple pendulum has a time period T1 when on the surface of earth and T2 when
taken to a height R above the earth’s surface, where R is the radius of the earth.
The value of T2/T1 is