When tall buildings are constructed on earth, the duration of day night slightly increases. Is it true?

When tall buildings are constructed on earth, the duration of day night slightly increases. Is this statement true or false?

If the earth loses its atmosphere sudenly, then the duration of day will :-

A vibrating string of certain length l under a tension T resonates with a mode corresponding to the first overtone (third harmonic) of an air column of length 75cm inside a tube closed at one end. The string also generates 4 beats per second when excited along with a tuning fork of frequency n . Now when the tension of the string is slightly increased the number of beats reduces 2 per second. Assuming the velocity of sound in air to be 340 m//s , the frequency n of the tuning fork in Hz is

The phenomenon of the influence of relative duration of day and night on flowering is called

A 1.5m tall boy is standing at some distance from a 30m tall building. The angle of elevation from his eyes to the top of the building increases from 30^@ to 60^@ as he walks towards the building. Find the distance he walked towards the building.

A piano wire A vibrates at a fundamental frequency of 600 Hz. A second identical wire B produces 6 beats per second with it when the tension in A is slightly increased. Find the ratio of the tension in A to the tension in B.

A piano wire A vibrates at a fundamental frequency of 600 H_(Z) . A second identical wire B produces 6 beats per second with it when the tension in A is slightly increased. Find the ratio of the tension in A to the tension in B .

A tuning fork of known frequency 256 Hz makes 5 beats per second with the vibrating string of a piano. The beat frequency decreases to 2 beats per second when the tension in the piano string is slightly increased. The frequency of the piano string before increasing the tension was

A tuning fork of frequency 512 Hz makes 4 beats//s with the vibrating string of a piano. The beat frequency decreases to 2 beats//s when the tension in the piano string is slightly increased.The frequency of the piano string before increasing the tension was

A sonometer wire vibrating in first overtone has length of 31.25cm . Tensio in the wire is 256N and mass per unit length is 10gm//m . When it is sounded together with a tuning fork 10 beats are heard. If tension in the wire is slightly increased no beats are heard. What is the possible frequency of the tuning fork ?