How to Pronounce

An echo repeats four syllables. Find the distance of the reflecting surface, if it takes one-fifth of a second to pronounce or hear one syllable distinctly. (Velocity of sound =340 m//s ).

An echo repeats 5 syllables, each of which requires ⅕th of a second to pronounce and ½ second elapses between the time the last syllable is heard and the first syllable is echoed. Is echoed. Calculated the distance of the reflecting surface, the velocity of sound being 332 m//s .

Which of the following age group, the children's ability to pronounce the letter w, b, t, f, g, n perfectly grows?

Go through the statements given below and choose the option with all incorrect statement(S). I. Common names can be misleading. II. Vernacular names are easier to pronounce. III. Common name 'touch-me-not' is given to two species, i.e. Nigella and Mimosa. IV. Vernacular names often have no significance.