Many animals move the ear flap (or pinna) in order to focus their hearing in a certain direction. Can human do so ?

(a) Many animals can move the pinna (or ear flap) in order to focus their hearing in a particular direction. What do the humans do for the same purpose ? (b) What is tinnitus ? ( c) "The hair cells of cochlea are very critical to hearing." Elaborate this statement.

Name the ear ossicles in the order of arrangement in human ear. What role do they play in hearing?

Name the ear ossicles in the order of arrangement in humans. What role do they play in hearing ?

105 goats, 140 donkeys and 175 cows have to be taken across a river. There is only one boat which will have to make many trips in order to do so. The lazy boatman has his own conditions for transporting them. He insists that he will take the same number of animals in every trip and they have to be of the same kind. He will naturally like to take the largest possible number each time. Can you tell how many animals went in each trip?

Circus animals do so many feats in the circus. The is possible by

A scientist performs an experiment in order to measure a certain physical quantity and takes 100 observations. He repeats the same experiment and takes 400 observations, by doing so

A scientist performs an experiment in order to measure a certain physical quantity and takes 100 observations. He repeats the same experiment and takes 400 observations, by doing so

A scientist performs an experiment in order to measure a certain physical quantity and takes 100 observations. He repeats the same experiment and takes 400 observations, by doing so