Physics-
General
Easy
Question
A soap bubble has radius R and thickness d(<<R) as shown. It collapses into a spherical drop. The ratio of excess pressure in the drop to the excess pressure inside the bubble is
- None
The correct answer is:
Related Questions to study
Physics-
A liquid is filled in a spherical container of radius R till a height h. At this positions the liquid surface at the edges is also horizontal. The contact angle is
A liquid is filled in a spherical container of radius R till a height h. At this positions the liquid surface at the edges is also horizontal. The contact angle is
Physics-General
Physics-
A uniform rod of density 
, and length 'l' is having square cross-section of side 'a'. It is placed in a liquid of equal density vertically along length in a tank having sufficient height of liquid. The surface tension of liquid is 'T' and angle of contact is 120° Then :
A uniform rod of density , and length 'l' is having square cross-section of side 'a'. It is placed in a liquid of equal density vertically along length in a tank having sufficient height of liquid. The surface tension of liquid is 'T' and angle of contact is 120° Then :
Physics-General
Chemistry-
The number of atoms in 100 g of an fcc crystal with density d = 10 g 1 cm3 and cell edge as 200 pm is equal to:
The number of atoms in 100 g of an fcc crystal with density d = 10 g 1 cm3 and cell edge as 200 pm is equal to:
Chemistry-General
Chemistry-
Which of the following is incorrect
Which of the following is incorrect
Chemistry-General
Physics-
If a number of small droplets of water each of radius r coalesce to form a single drop of radius R, then the rise of temperature is : (J= mechanical equivalent of heat, d= density of water, T= surface tension of water)
If a number of small droplets of water each of radius r coalesce to form a single drop of radius R, then the rise of temperature is : (J= mechanical equivalent of heat, d= density of water, T= surface tension of water)
Physics-General
Physics-
The pressure inside two soap bubbles is 1.01 and 1.02 atmosphere respectively. The ratio of their volumes is (atmospheric pressure 
)
The pressure inside two soap bubbles is 1.01 and 1.02 atmosphere respectively. The ratio of their volumes is (atmospheric pressure )
Physics-General
Physics-
A capillary tube of radius 0.2 mm is dipped vertically in a beaker containing water if surface tension of water is 
the rise of water in the tube will be
A capillary tube of radius 0.2 mm is dipped vertically in a beaker containing water if surface tension of water is the rise of water in the tube will be
Physics-General
Physics-
The mean density of sea water is 
and bulk modulus is B. The change in the density of sea water in going from the surface to depth of h is
The mean density of sea water is and bulk modulus is B. The change in the density of sea water in going from the surface to depth of h is
Physics-General
Physics-
Two wires of equal length and cross-section are suspended as shown in the figure. Their young’s moduli are 
respectively. Their equivalent young's modulus of elasticity is
Two wires of equal length and cross-section are suspended as shown in the figure. Their young’s moduli are respectively. Their equivalent young's modulus of elasticity is
Physics-General
Physics-
The ratio of length radii and young’s modulus of steel and brass wires are a, b, c respectively. Then the corresponding ratio of increases in their length in the situation shown in figure would be
The ratio of length radii and young’s modulus of steel and brass wires are a, b, c respectively. Then the corresponding ratio of increases in their length in the situation shown in figure would be
Physics-General
Physics-
A constant force 
is applied on a uniform elastic string placed over a smooth horizontal surface as shown in figure. Youngs modulus of string is Y and cross - sectional area of string is S. The strain produced in the string in the direction of force is
A constant force is applied on a uniform elastic string placed over a smooth horizontal surface as shown in figure. Youngs modulus of string is Y and cross - sectional area of string is S. The strain produced in the string in the direction of force is
Physics-General
Chemistry-
The gas molecules randomly move in all directions and collide with each other and with the wall of the container. It is difficult to determine the speed of an individual molecule but it has become possible to work out the distribution of molecules among different molecular speeds. This is known as Maxwell Boltzmann distribution. Consider the following graph about Maxwell's distribution of speeds at two different temperatures 
and 
:
The curve has which of the following characteristics?
i) It has symmetrical distribution of molecules against molecular velocity,
ii) The area under the curve gives the total number of molecules,
iii) The maximum of the curve shifts towards right as the temperature is raised.
iv) The area under the curve is independent of temperature,
Select the correct statements from the codes given below:
The gas molecules randomly move in all directions and collide with each other and with the wall of the container. It is difficult to determine the speed of an individual molecule but it has become possible to work out the distribution of molecules among different molecular speeds. This is known as Maxwell Boltzmann distribution. Consider the following graph about Maxwell's distribution of speeds at two different temperatures and :
The curve has which of the following characteristics?
i) It has symmetrical distribution of molecules against molecular velocity,
ii) The area under the curve gives the total number of molecules,
iii) The maximum of the curve shifts towards right as the temperature is raised.
iv) The area under the curve is independent of temperature,
Select the correct statements from the codes given below:
Chemistry-General
Chemistry-
The gas molecules randomly move in all directions and collide with each other and with the wall of the container. It is difficult to determine the speed of an individual molecule but it has become possible to work out the distribution of molecules among different molecular speeds. This is known as Maxwell Boltzmann distribution. Consider the following graph about Maxwell's distribution of speeds at two different temperatures and :
Select the correct statement(s):
The gas molecules randomly move in all directions and collide with each other and with the wall of the container. It is difficult to determine the speed of an individual molecule but it has become possible to work out the distribution of molecules among different molecular speeds. This is known as Maxwell Boltzmann distribution. Consider the following graph about Maxwell's distribution of speeds at two different temperatures and :
Select the correct statement(s):
Chemistry-General
Chemistry-
The gas molecules randomly move in all directions and collide with each other and with the wall of the container. It is difficult to determine the speed of an individual molecule but it has become possible to work out the distribution of molecules among different molecular speeds. This is known as Maxwell Boltzmann distribution. Consider the following graph about Maxwell's distribution of speeds at two different temperatures and :
Total area under the curve at is:
The gas molecules randomly move in all directions and collide with each other and with the wall of the container. It is difficult to determine the speed of an individual molecule but it has become possible to work out the distribution of molecules among different molecular speeds. This is known as Maxwell Boltzmann distribution. Consider the following graph about Maxwell's distribution of speeds at two different temperatures and :
Total area under the curve at is:
Chemistry-General
Chemistry-
The gas molecules randomly move in all directions and collide with each other and with the wall of the container. It is difficult to determine the speed of an individual molecule but it has become possible to work out the distribution of molecules among different molecular speeds. This is known as Maxwell Boltzmann distribution. Consider the following graph about Maxwell's distribution of speeds at two different temperatures and :
Relation between and is:
The gas molecules randomly move in all directions and collide with each other and with the wall of the container. It is difficult to determine the speed of an individual molecule but it has become possible to work out the distribution of molecules among different molecular speeds. This is known as Maxwell Boltzmann distribution. Consider the following graph about Maxwell's distribution of speeds at two different temperatures and :
Relation between and is:
Chemistry-General
