A sparrow flying in air sits on a stretched telegraph wire If weight of the sparrow is `W` which of the following is true about the tension `T` produced in the wire ?

Which of the following statements is not true about surface tension ?

Which of the following statements is not true about surface tension ?

Which of the following statements about weight is true?

The frequencies of the fundamentals produced by a 200 cm long pipe open at both ends and a 25 cm long sonometer wire are the same. The mass of 1 cm length of the wire is 1 g . Calculate the tension produced in the wire . Velocity of sound in air is 330 m*s^(-1) .

A current-carrying wire got pulled, stretching it and making it thinner in its middle. The cross-section of that wire is shown in the following figure. Which of the following statements about the current and the temperature of the wire is true?

A bird alights on a stretched telegraph wire. Does this change the tension in the wire ? If so,by an amount less than, equal to, or greater than the weight of the bird ?

Twelve horizontal telephone wires are supported by a vertex telegraph post , 5 wires ecrossing from the north and 7 wires from the rest . If all the wires are under the same tension , in which direction should the stay wire be fixed ? What is the resultant ten be fixed ? What is the resultant tension in the stay wire ?

A block of weight W is supported by three strings as shown in figure. Which of the following relations is true for tension in the string ? (Here, T_(1), T_(2) and T_(3) are the tension in the strings A,B and C respectively)

A block of weight W is supported by three strings as shown in figure. Which of the following relations is true for tension in the string ? (Here, T_(1), T_(2) and T_(3) are the tension in the strings A,B and C respectively)