Question

40.
a. What is a simple pendulum? Define the time period of a simple pendulum.
b. State whether the following statement is true or false: The time period of a given pendulum
is not constant.
c. In an experiment to measure the time period of a simple pendulum, the time for 20
complete oscillations was found to be 36 sec. What is the time period of this pendulum?
41.
a. What is the role played by the stomata in plants?
b. Mention some of the special features of desert plants.
42.
a. An iron ball at 40° C is dropped in a mug containing water at 40° C. What will be the
passage of flow of heat in the system? Explain.
b. How does heat flow in a body having one end cool and the other at high
temperature?

Answer 1

Answer:

a)A simple pendulum consists of a small metal ball (called bob) suspended by a long thread from a rigid support, such that the bob is free to swing back and forth. The time period of a simple pendulum is the time taken by the pendulum bob to make one complete oscillation.

Answer 2

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