- 1(current)
Q. No.With a rise in temperature:
| 1. | surface tension of water decreases. |
| 2. | viscosity of water decreases. |
| 3. | viscosity of air decreases. |
| 4. | viscosity of air increases. |
Subtopic: Â Surface Tension |
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.
The surface tension of soapy water is \(S.\) When bubbles are blown with soapy water, one bubble of radius \(r\) is formed within another of radius \(3r.\) The excess pressure within the smaller bubble, relative to the atmospheric pressure is:
| 1. | \(\dfrac{4S}{r}\) | 2. | \(\dfrac{8S}{3r}\) |
| 3. | \(\dfrac{8S}{r}\) | 4. | \(\dfrac{16S}{3r}\) |
Subtopic: Â Surface Tension |
From NCERT
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NEET 2026 - Target Batch - Vital
Hints
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NEET 2026 - Target Batch - Vital
When two drops of water coalesce:
| I: | total surface area decreases. |
| II: | there is some rise in the temperature. |
Which of the following is correct?
| 1. | Both (I) and (II) are wrong statements. |
| 2. | (I) is True but (II) is False. |
| 3. | Both (I) and (II) are True and the two statements are independent of each other. |
| 4. | Both (I) and (II) are True and (I) is the cause of (II). |
Subtopic: Â Surface Tension |
 57%
From NCERT
To view explanation, please take trial in the course.
NEET 2026 - Target Batch - Vital
Hints
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NEET 2026 - Target Batch - Vital
A pair of soap bubbles cling together to form a double-bubble as shown: their respective radii are \(3R,R.\) The radius of their interface \((PQ)\) is:
| 1. | \(2R\) | 2. | \(5R\) |
| 3. | \(\dfrac{3R}{4}\) | 4. | \(\dfrac{3R}{2}\) |
Subtopic: Â Surface Tension |
 58%
From NCERT
To view explanation, please take trial in the course.
NEET 2026 - Target Batch - Vital
Hints
To view explanation, please take trial in the course.
NEET 2026 - Target Batch - Vital
- 1(current)
Q. No.
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