SATHEE: Properties Of Solids And Liquids Question 204

Properties Of Solids And Liquids Question 204

Question: A large number of water drops each of radius r combine to have a drop of radius R. If the surface tension is T and the mechanical equivalent of heat is J, then the rise in temperature will be[MP PET 1994; DPMT 2002]

Options:

A) $\frac{2 T}{r J}$

B) $\frac{3 T}{R J}$

C) $\frac{3 T}{J} (\frac{1}{r} - \frac{1}{R})$

D) $\frac{2 T}{J} (\frac{1}{r} - \frac{1}{R})$

Show Answer

Answer:

Correct Answer: C

Solution:

Rise in temperature, $Δ θ = \frac{3 T}{J S d} (\frac{1}{r} - \frac{1}{R})$ $Δ θ = \frac{3 T}{J} (\frac{1}{r} - \frac{1}{R})$ (For water S = 1 and d = 1)

Properties Of Solids And Liquids Question 204

Question: A large number of water drops each of radius r combine to have a drop of radius R. If the surface tension is T and the mechanical equivalent of heat is J, then the rise in temperature will be[MP PET 1994; DPMT 2002]

Options:

Answer:

Solution:

Engineering Preparation

Medical Preparation

NCERT Books & Solutions

Important Resources

Other Resources

Syllabus

Test Platform

Sample Mock Test

Mentorship

NCERT Exercise Video Solution

Properties Of Solids And Liquids Question 204

Question: A large number of water drops each of radius r combine to have a drop of radius R. If the surface tension is T and the mechanical equivalent of heat is J, then the rise in temperature will be[MP PET 1994; DPMT 2002]

Options:

Answer:

Solution:

Engineering Preparation

Medical Preparation

NCERT Books & Solutions

Important Resources

Other Resources

Syllabus

Test Platform

Sample Mock Test

Mentorship

NCERT Exercise Video Solution

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