MTG NEET Physics

A metallic ball has spherical cavity at its centre. If the ball is heated, the volume of cavity A metallic ball has spherical cavity at its centre. If the ball is heated the volume of cavity November 18, 2020 Category: Chapter 16 - Calorimetry and Heat Transfer , MTG NEET Physics , Part 1 ,

Two beakers A and B are filled to the brim with water at 4 °C. When A is heated and B is cooled, the water the water Two beakers A and B are filled to the brim with water at 4 °C. When A is heated and B is cooled November 18, 2020 Category: Chapter [...]

Assertion: When hot water is poured in a beaker of thick glass, the beaker cracks. Reason: Outer surface of the beaker expands suddenly. Assertion: When hot water is poured in a beaker of thick glass the beaker cracks. Reason: Outer surface of the beaker expands suddenly. November 18, 2020 Category: Chapter 16 - Calorimetry and [...]

Two spheres of the same material have the same radius but one is hollow while the other is solid. Both sphere are heated to same temperature, then then Two spheres of the same material have the same radius but one is hollow while the other is solid. Both sphere are heated to same temperature November [...]

When the temperature of a rod increases from t to t +Δt its moment of inertia increases from I to I + ΔI . If α be the coefficient of linear expansion of the rod, then the value of ΔI/I is then the value of ΔI/I is When the temperature of a rod increases from [...]

The property of water that has an important environmental effect is its The property of water that has an important environmental effect is its November 18, 2020 Category: Chapter 16 - Calorimetry and Heat Transfer , MTG NEET Physics , Part 1 ,

A one litre flask contains certain quantity of mercury. If the volume of air inside the flask remains the same at all temperatures then the volume of mercury in the flask is (volume expansion coefficient of mercury is 20 times that of flask) a temperature of 340 K would be read as On a temperature [...]

If anisotropic solid has coefficients of linear expansion αx,αy & αz for 3 mutually perpendicular directions in the solid , its coefficients of volume expansion will be If anisotropic solid has coefficients of linear expansion αx its coefficients of volume expansion will be αy & αz for 3 mutually perpendicular directions in the solid November [...]

The density of water at 20∘C is 998 kg/m^3 and at 40∘C 992 kg/m^3. The coefficient of volume expansion of water is The density of water at 20∘C is 998 kg/m^3 and at 40∘C 992 kg/m^3. The coefficient of volume expansion of water is November 18, 2020 Category: Chapter 16 - Calorimetry and Heat Transfer [...]

A metal rod is fixed rigidly at two ends so as to prevent its thermal expansion. If L,α and Y respectively denote the length of the rod, coefficient of linear thermal expansion and Young’s modulus of its material, then for an increase in temperature of the rod by ΔT, the longitudinal stress developed in the [...]