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Rate of cooling at 600 K, if surrounding temperature is 300 K is R.
According to Newton's law of cooling, the rate of cooling is proportional to the difference between the temperature of the object and the surrounding temperature: Rate of cooling = k(T_object - T_surrounding) Let the initial temperature of the object be 600 K and the surrounding temperature be 300 KRead more
According to Newton’s law of cooling, the rate of cooling is proportional to the difference between the temperature of the object and the surrounding temperature:
Rate of cooling = k(T_object – T_surrounding)
Let the initial temperature of the object be 600 K and the surrounding temperature be 300 K. If the rate of cooling at 600 K is R, the rate of cooling at a temperature T is proportional to (T – 300).
For the temperature 600 K, the rate of cooling is:
R = k(600 – 300) = 300k
Now, for the temperature 300 K, the rate of cooling will be zero because the temperature difference is zero.
Thus, the correct answer is: 2 R
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If A = ∅, then the number of elements in P(A) is
Choice (b) is correct. If A = ∅, ∅ is only subset of A = ∅. P(∅) = {∅} = P(A) has only one element. This question related to Chapter 1 maths Class 11th NCERT. From the Chapter 1. Sets. Give answer according to your understanding. For more please visit here: https://www.tiwariacademy.com/ncert-solutiRead more
Choice (b) is correct. If A = ∅, ∅ is only subset of A = ∅. P(∅) = {∅} = P(A) has only one element.
This question related to Chapter 1 maths Class 11th NCERT. From the Chapter 1. Sets. Give answer according to your understanding.
For more please visit here:
See lesshttps://www.tiwariacademy.com/ncert-solutions/class-11/maths/#chapter-1
If X and Y are two sets and X’ denotes the complement of X, then X ∩(X∩Y)’ is equal to
Choice (d) is correct. X ∩ (X ∪ Y)' = X ∩ ( X' ∩ Y') = (X ∩ X') ∩ Y' = ∅ ∩ Y' = ∅. This question related to Chapter 1 maths Class 11th NCERT. From the Chapter 1. Sets. Give answer according to your understanding. For more please visit here: https://www.tiwariacademy.com/ncert-solutions/class-11/mathRead more
Choice (d) is correct. X ∩ (X ∪ Y)’ = X ∩ ( X’ ∩ Y’) = (X ∩ X’) ∩ Y’ = ∅ ∩ Y’ = ∅.
This question related to Chapter 1 maths Class 11th NCERT. From the Chapter 1. Sets. Give answer according to your understanding.
For more please visit here:
See lesshttps://www.tiwariacademy.com/ncert-solutions/class-11/maths/#chapter-1
In which of the following conditions, the distance between the molecules of hydrogen gas would increase? (i) Increasing pressure on hydrogen contained in a closed container. (ii) Some hydrogen gas leaking out of the container. (iii) Increasing the volume of the container of hydrogen gas. (iv) Adding more hydrogen gas to the container without increasing the volume of the container. (a) (i) and (iii) (b) (i) and (iv) (c) (ii) and (iii) (d) (ii) and (iv)
(c) On increasing pressure and on adding more hydrogen gas to the cylinder (increasing the pressure), the molecules will come closer. Therefore, observations in (i) and (iv) are wrong. https://www.tiwariacademy.com/ncert-solutions/class-9/science/chapter-1/
(c) On increasing pressure and on adding more hydrogen gas to the cylinder (increasing the pressure), the molecules will come closer. Therefore, observations in (i) and (iv) are wrong.
https://www.tiwariacademy.com/ncert-solutions/class-9/science/chapter-1/
See lessIf A and B are two sets, then A ∩ (A ∩ B) equals
Choice (c) is correct. As A ∩ B⊊ A, so A ∩ (A ∩ B) = A ∩ B. This question related to Chapter 1 maths Class 11th NCERT. From the Chapter 1. Sets. Give answer according to your understanding. For more please visit here: https://www.tiwariacademy.com/ncert-solutions/class-11/maths/#chapter-1
Choice (c) is correct. As A ∩ B⊊ A, so A ∩ (A ∩ B) = A ∩ B.
This question related to Chapter 1 maths Class 11th NCERT. From the Chapter 1. Sets. Give answer according to your understanding.
For more please visit here:
See lesshttps://www.tiwariacademy.com/ncert-solutions/class-11/maths/#chapter-1