A narrow, uniform glass tube, closed at one end, constain...
A narrow, uniform glass tube, closed at one end, constains air which is sealed by a thread of mercury. The tube is placed first horizontally and then vertically with the open end at the top. Which of the following statements is correct?
The length of the entrapped air in the horizontal position is less than that in the vertical position
The length of the entrapped air in the vertical position is less than that in the horizontal position
The length of the mercury column becomes shorter in the horizontal position than in the vertical position
The length of the mercury column becomes shorter in the vertical position than in the horizontal position
The pressure of the entrapped air is atmospheric in both cases.
Correct answer is B
No explanation has been provided for this answer.
Which of the following is NOT an example of a percussion instrument? ...
Why does a piece of cork float on water? ...
Two balls X and Y weighing 5 g and 50 kg respectively were thrown up vertically at the same tim...
A calibrated potentiometer is used to measure the e.m.f. of a cell because the ...