Define transpiration, and describe an experiment to show the rate of transpiration by Ganong’s photometer.
A parallel beam of sodium light is incident normally on a diffraction grating. The angle between the two first-order on either side of the normal is 27°42'. Assuming that the wavelength of the light is 5.893×10^-7 m, find the number of rulings per mm on the grating.
In a resonance tube experiment, the first and the second resonance positions were observed at 17 cm and 52.6 cm respectively. The tuning fork used was frequency 512 Hz and the temperature was 17°C. Calculate the velocity of sound in air at 0°C and the end correction of the tube.
A tuning fork produces a feeble sound. But when it is pressed against a table, a loud sound is heard. Why?
A source of frequency emits a wave of wavelength 64.5 cm in the air at 27°C, What would be the velocity of sound at 0°C?
The speed of sound in humid air is more than in dry air, why?
Write any five objectives of double entry bookkeeping system.
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