Question Answers
Sahay Sir > Question Answers
Check whether the following are quadratic equations : x^2 + 3x + 1 = (x−2)^2
04
Oct
Check whether the following are quadratic equations : x^2 + 3x + 1 = (x−2)^2 Check whether the following are quadratic equations : x^2 + 3x + 1 = (x−2)^2 October 4, 2020 Category: Chapter 4 - Quadratic Equations , Exercise 4.1 , Maths , NCERT Class 10 ,
The figure shows three different arrangements of materials 1, 2 and 3 ( identical in shape ) to form a wall. The thermal conductivities are k1, k2 and k3 , respectively , and k1 > k2 > k3. The left side of the wall is 20 degree higher than the right side.
04
Oct
The figure shows three different arrangements of materials 1, 2 and 3 ( identical in shape ) to form a wall. The thermal conductivities are k1, k2 and k3 , respectively , and k1 > k2 > k3. The left side of the wall is 20 degree higher than the right side. 2 and 3 [...]
Check whether the following are quadratic equations : (2x−1)(x−3) = (x+5)(x−1)
04
Oct
Check whether the following are quadratic equations : (2x−1)(x−3) = (x+5)(x−1) Check whether the following are quadratic equations : (2x−1)(x−3) = (x+5)(x−1) October 4, 2020 Category: Chapter 4 - Quadratic Equations , Exercise 4.1 , Maths , NCERT Class 10 ,
Check whether the following are quadratic equations : (x−3)(2x+1) = x(x+5)
04
Oct
Check whether the following are quadratic equations : (x−3)(2x+1) = x(x+5) Check whether the following are quadratic equations : (x−3)(2x+1) = x(x+5) October 4, 2020 Category: Chapter 4 - Quadratic Equations , Exercise 4.1 , Maths , NCERT Class 10 ,
Check whether the following are quadratic equations : (x−2)(x+1) = (x−1)(x+3)
04
Oct
Check whether the following are quadratic equations : (x−2)(x+1) = (x−1)(x+3) Check whether the following are quadratic equations : (x−2)(x+1) = (x−1)(x+3) October 4, 2020 Category: Chapter 4 - Quadratic Equations , Exercise 4.1 , Maths , NCERT Class 10 ,
A conducting cylindrical rod of uniform cross-sectional area is kept between two large chambers which are at temperatures 100∘C and 0∘C, respectively. The cconductivety of the rod increases with x, where x is distance from 100∘C end. The temperature profile of the rod in steady -state will be as
04
Oct
A conducting cylindrical rod of uniform cross-sectional area is kept between two large chambers which are at temperatures 100∘C and 0∘C, respectively. The cconductivety of the rod increases with x, where x is distance from 100∘C end. The temperature profile of the rod in steady -state will be as A conducting cylindrical rod of uniform [...]
Tags:
A conducting cylindrical rod of uniform cross-sectional area is kept between two large chambers which are at temperatures 100∘C and 0∘C ,
respectively. The cconductivety of the rod increases with x ,
where x is distance from 100∘C end. The temperature profile of the rod in steady -state will be as ,
The two opposite faces of a cubical piece of iron (thermal conductivity = 0.2 CGS units) are at 100∘C and 0∘C in ice. If the area of a surface is 4 cm^2 , then the mass of ice melted in 10 minutes will b
04
Oct
The two opposite faces of a cubical piece of iron (thermal conductivity = 0.2 CGS units) are at 100∘C and 0∘C in ice. If the area of a surface is 4 cm^2 , then the mass of ice melted in 10 minutes will b The two opposite faces of a cubical piece of iron (thermal [...]
A solid cube and a solid sphere of the same material have equal surface area. Both are at the same temperature 120∘C, then
04
Oct
A solid cube and a solid sphere of the same material have equal surface area. Both are at the same temperature 120∘C, then A solid cube and a solid sphere of the same material have equal surface area. Both are at the same temperature 120∘C then October 4, 2020 Category: Uncategorised (JEE Advanced Physics by [...]
Two identical conducting rods are first connected independently to two vessels, one containing water at 100∘C and the other containing ice at 0∘C. In the second case, the rods are joined end to end and connected to the same vessels. Let q1 and q2 gram per second be the rate of melting of ice in the two cases respectively. The ratio q1/q2 is
04
Oct
Two identical conducting rods are first connected independently to two vessels, one containing water at 100∘C and the other containing ice at 0∘C. In the second case, the rods are joined end to end and connected to the same vessels. Let q1 and q2 gram per second be the rate of melting of ice in [...]
Tags:
one containing water at 100∘C and the other containing ice at 0∘C. In the second case ,
the rods are joined end to end and connected to the same vessels. Let q1 and q2 gram per second be the rate of melting of ice in the two cases respectively. The ratio q1/q2 is ,
Two identical conducting rods are first connected independently to two vessels ,
Ice has formed on a shallow pond, and a steady state has been reached, with the air above the ice at −5.0∘C and the bottom of the pond at 40∘C. If the total depth of ice + water is 1.4 m, (Assume that the thermal conductivities of ice and water are 0.40 and 0.12 cal /m C∘s, respectively.) The thickness of ice layer is
04
Oct
Ice has formed on a shallow pond, and a steady state has been reached, with the air above the ice at −5.0∘C and the bottom of the pond at 40∘C. If the total depth of ice + water is 1.4 m, (Assume that the thermal conductivities of ice and water are 0.40 and 0.12 cal [...]
Tags:
(Assume that the thermal conductivities of ice and water are 0.40 and 0.12 cal /m C∘s ,
and a steady state has been reached ,
Ice has formed on a shallow pond ,
respectively.) The thickness of ice layer is ,
with the air above the ice at −5.0∘C and the bottom of the pond at 40∘C. If the total depth of ice + water is 1.4 m ,