Mercury thermometers can measure temperatures up to around 360°C because mercury stays in its liquid state up to this temperature. Beyond this, mercury begins to vaporize and cannot be used for measurements above this point. Click for more: https://www.tiwariacademy.com/ncert-solutions/class-11/physRead more
Mercury thermometers can measure temperatures up to around 360°C because mercury stays in its liquid state up to this temperature. Beyond this, mercury begins to vaporize and cannot be used for measurements above this point.
According to the kinetic theory of gases, at absolute zero (0 Kelvin or -273.15°C), the molecules of a substance have no kinetic energy and their motion theoretically stops completely. This is the lowest possible temperature. Click this more information: https://www.tiwariacademy.com/ncert-solutionsRead more
According to the kinetic theory of gases, at absolute zero (0 Kelvin or -273.15°C), the molecules of a substance have no kinetic energy and their motion theoretically stops completely. This is the lowest possible temperature.
The amount of sun's radiant energy received is proportional to the power output of the sun from Stefan-Boltzmann's Law: P ∝ R²T⁴ 1. Preliminary P₁ ∝ R²T⁴ 2. After alteration - The radius increases to 2R: The area increases proportionally to (2R)² = 4R² - Temperature increases to 2T: Power increasesRead more
The amount of sun’s radiant energy received is proportional to the power output of the sun from Stefan-Boltzmann’s Law:
P ∝ R²T⁴
1. Preliminary
P₁ ∝ R²T⁴
2. After alteration
– The radius increases to 2R: The area increases proportionally to (2R)² = 4R²
– Temperature increases to 2T: Power increases proportionally to (2T)⁴ = 16T⁴
– Total power increases to:
P₂ ∝ 4R² × 16T⁴ = 64R²T⁴
3. The ratio of the new power to the old power:
P₂ / P₁ = (64R²T⁴) / (R²T⁴) = 64
Thus, the radiant energy received on Earth will increase by a factor of 64.
Pyrometers are designed to measure extremely high temperatures, such as those in the range of 2,000 to 2,500°C, and are commonly used in industrial applications like furnaces and molten metal. Click here for more: https://www.tiwariacademy.com/ncert-solutions/class-11/physics/chapter-10/
Pyrometers are designed to measure extremely high temperatures, such as those in the range of 2,000 to 2,500°C, and are commonly used in industrial applications like furnaces and molten metal.
In the case of a frictionless inclined table, the work done by the table surface on the ball can be analyzed through the forces acting on the ball. Since there is no friction, the only force acting parallel to the surface is gravity. Gravity does not do work against the normal force of the table. ThRead more
In the case of a frictionless inclined table, the work done by the table surface on the ball can be analyzed through the forces acting on the ball.
Since there is no friction, the only force acting parallel to the surface is gravity. Gravity does not do work against the normal force of the table. The normal force acts perpendicular to the displacement of the ball.
Work done (W) is given by the formula:
W = F • d • cos(θ)
Where:
– F is the force
– d is the displacement
– θ is the angle between the force and displacement
This implies that the displacement and the force exerted are perpendicular to each other, that is, θ = 90 degrees. This gives cos(90°) = 0. Thus the work done by the table surface on the ball is:
W = F • d • 0 = 0
Final Answer:
The work done by the table surface on the ball is zero.
Mercury thermometer can be used to measure temperature upto
Mercury thermometers can measure temperatures up to around 360°C because mercury stays in its liquid state up to this temperature. Beyond this, mercury begins to vaporize and cannot be used for measurements above this point. Click for more: https://www.tiwariacademy.com/ncert-solutions/class-11/physRead more
Mercury thermometers can measure temperatures up to around 360°C because mercury stays in its liquid state up to this temperature. Beyond this, mercury begins to vaporize and cannot be used for measurements above this point.
Click for more:
See lesshttps://www.tiwariacademy.com/ncert-solutions/class-11/physics/chapter-10/
According to kinetic theory of gases at absolute zero of temperature
According to the kinetic theory of gases, at absolute zero (0 Kelvin or -273.15°C), the molecules of a substance have no kinetic energy and their motion theoretically stops completely. This is the lowest possible temperature. Click this more information: https://www.tiwariacademy.com/ncert-solutionsRead more
According to the kinetic theory of gases, at absolute zero (0 Kelvin or -273.15°C), the molecules of a substance have no kinetic energy and their motion theoretically stops completely. This is the lowest possible temperature.
Click this more information:
See lesshttps://www.tiwariacademy.com/ncert-solutions/class-11/physics/chapter-10/
If the temperature of the sun were to increase from T to 2 T and its radius from R to 2 R, then the ratio of the radiant energy received on earth to what it was previously, will be
The amount of sun's radiant energy received is proportional to the power output of the sun from Stefan-Boltzmann's Law: P ∝ R²T⁴ 1. Preliminary P₁ ∝ R²T⁴ 2. After alteration - The radius increases to 2R: The area increases proportionally to (2R)² = 4R² - Temperature increases to 2T: Power increasesRead more
The amount of sun’s radiant energy received is proportional to the power output of the sun from Stefan-Boltzmann’s Law:
P ∝ R²T⁴
1. Preliminary
P₁ ∝ R²T⁴
2. After alteration
– The radius increases to 2R: The area increases proportionally to (2R)² = 4R²
– Temperature increases to 2T: Power increases proportionally to (2T)⁴ = 16T⁴
– Total power increases to:
P₂ ∝ 4R² × 16T⁴ = 64R²T⁴
3. The ratio of the new power to the old power:
P₂ / P₁ = (64R²T⁴) / (R²T⁴) = 64
Thus, the radiant energy received on Earth will increase by a factor of 64.
Click here for more:
See lesshttps://www.tiwariacademy.com/ncert-solutions/class-11/physics/chapter-10/
For measuring temperature in the range of 2,000 to 2,500°C, we should employ
Pyrometers are designed to measure extremely high temperatures, such as those in the range of 2,000 to 2,500°C, and are commonly used in industrial applications like furnaces and molten metal. Click here for more: https://www.tiwariacademy.com/ncert-solutions/class-11/physics/chapter-10/
Pyrometers are designed to measure extremely high temperatures, such as those in the range of 2,000 to 2,500°C, and are commonly used in industrial applications like furnaces and molten metal.
Click here for more:
See lesshttps://www.tiwariacademy.com/ncert-solutions/class-11/physics/chapter-10/
A ball moves in a frictionless inclined table without slipping. The work done by the table surface on the ball is
In the case of a frictionless inclined table, the work done by the table surface on the ball can be analyzed through the forces acting on the ball. Since there is no friction, the only force acting parallel to the surface is gravity. Gravity does not do work against the normal force of the table. ThRead more
In the case of a frictionless inclined table, the work done by the table surface on the ball can be analyzed through the forces acting on the ball.
Since there is no friction, the only force acting parallel to the surface is gravity. Gravity does not do work against the normal force of the table. The normal force acts perpendicular to the displacement of the ball.
Work done (W) is given by the formula:
W = F • d • cos(θ)
Where:
– F is the force
– d is the displacement
– θ is the angle between the force and displacement
This implies that the displacement and the force exerted are perpendicular to each other, that is, θ = 90 degrees. This gives cos(90°) = 0. Thus the work done by the table surface on the ball is:
W = F • d • 0 = 0
Final Answer:
The work done by the table surface on the ball is zero.
Click here for more:
See lesshttps://www.tiwariacademy.com/ncert-solutions/class-11/physics/chapter-5/