Home
Class 11
PHYSICS
A thin liquid film formed between a U-sh...

A thin liquid film formed between a U-shaped wire and a light slider supports a weight of `1.5 xx 10^(-2)` N (see figure). The length of the slider is 30 cm and its weight negligible. The surface tension of the liquied film is

A

`0.0125 Nm^(-1)`

B

`0.1 Nm^(-1)`

C

`0.05 Nm^(-1)`

D

`0.025 Nm^(-1)`

Text Solution

Verified by Experts

The correct Answer is:
D
`2TL = mg`
`T = (mg)/(2L) = (1.5 xx 10^(-2))/(2 xx 30 xx 10^(-2)) = (1.5)/(600) = 0.025 N//m`
Promotional Banner

Topper's Solved these Questions

  • SURFACE TENSION

    RESONANCE ENGLISH|Exercise Advanced Level Problems|17 Videos

  • SURFACE TENSION

    RESONANCE ENGLISH|Exercise Exercise- 3 PART - I|8 Videos

  • STRING WAVES

    RESONANCE ENGLISH|Exercise Exercise|32 Videos

  • UNITS, DIMENSION & MEASUREMENT

    RESONANCE ENGLISH|Exercise Exercise|27 Videos

Similar Questions

Explore conceptually related problems

A thin film of liquid is formed in a rectangular frame of wire and a light slider supports a weight of (2.5 * 10^-2)N .The length of slider is 20cm and its weight negligible. The surface tension is liquid is

A U-shaped wire is dipped in a soap solution, and removed. A thin soap film formed between the wire and a light slider supports a weight of 1.5xx10^(-2)N (which includes the small weigh of the slider). The length of the slider is 30cm. What is the surface tension of the film?

The surface tension of a thin liquid film formed between a U shaped wire and a light slider of length 30 cm supporing a weight of 1.5xx10^(-2)N is

A drop of some liquid of volume 0.04 cm^(3) is placed on the surface of a glass slide. Then, another glass forms a thin layer of area 20 cm^(2) between the surfaces of the two slides. To separate the slides a force of 16 xx 10^(5) dyne has to be applied normal to the surfaces. The surface tension of the liquid is (in dyne cm^(-1))

A container of width 2a is filled with a liquid. A thin wire of weight per unit length lamda is gently placed over the liquid surface in the middle of the surface as shown in the figure. As a result, the liquid surface is depressed by a distance y ( y ltlt a ) . If the surface tension of the liquid is (4 lamda ag )/(ky) . Then value of k is .

A long thin straight uniform wire of negligible radius is supported on the surface of a liquid. The width of the container is 2d and the wire is kept at its centre, parallel to its length (as shown in figure). The surface of the liquid is depressed by a veritcal distance y(y lt lt d) at the centre as shown in figure. If the wire has mass lambda per unit length, what is the surface tension of the liquid? igonre end effects.

A rectangular film of liquid is extended from (4 cm xx 2 cm) to (5 cm xx 4 xx cm) . If the work done is 3 xx 10^(-4)J , the value of the surface tension of the liquid is

Radius of a capillary is 2xx10^(-3)m . A liquid of weight 6.28xx10^(-4)N may remain in the capillary, then the surface tension of liquid will be:

A 10 cm long wire is placed horizontal on the surface of water and is gently pulled up with a force of 2xx10^(-2) N to keep the wire in equilibrium. The surface tension, in Nm^(-1) of water is

Fig, shown a thin film supporting a small weight = 4.5xx10^(-2)N . What is the weight supported by a film of the same liquid at the same temperature in fig. explain your answer physically. .