The emission of light by a solid that has been heated is called:

1, 3, 5, 4 and 2

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4, 3, 5, 2 and 1

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1, 2, 3, 4 and 5

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4, 2, 5, 1 and 3

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Solution

The correct option is A
1, 3, 5, 4 and 2

Incandescence is the emission of light by a solid that has been heated until it glows, or radiates light. For example, when an iron bar is heated to a very high temperature, it initially glows red, and then as its temperature rises, it glows white.

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Q. Consider the 5 x 5 matrix

A = ⎡ ⎢ ⎢ ⎢ ⎢ ⎢ ⎢ ⎣ \begin{matrix} 1 & 2 & 3 & 4 & 5 5 & 1 & 2 & 3 & 4 4 & 5 & 1 & 2 & 3 3 & 4 & 5 & 1 & 2 2 & 3 & 4 & 5 & 1 \end{matrix} ⎤ ⎥ ⎥ ⎥ ⎥ ⎥ ⎥ ⎦

It is given that A has only one real eigen value. Then the real eigen value A is

Question 4(a) :

Look at the figures and write ‘<’ or ‘>’ between the given pairs of fractions:

$\frac{1}{6} □ \frac{1}{3}$

Q. If

A = ⎛ ⎜ ⎝ \begin{matrix} 2 & 3 & 4 0 & - 2 & 1 3 & - 1 & 2 \end{matrix} ⎞ ⎟ ⎠, B = ⎛ ⎜ ⎝ \begin{matrix} 2 & 0 & - 3 4 & 0 & - 1 3 & 4 & 5 \end{matrix} ⎞ ⎟ ⎠

and

C = ⎛ ⎜ ⎝ \begin{matrix} 5 & 6 & 7 - 1 & 2 & 3 4 & - 5 & 4 \end{matrix} ⎞ ⎟ ⎠

Prove that

A (B C)

and

(A B) C

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The emission of light by a solid that has been heated is called:

The correct option is A 1, 3, 5, 4 and 2 Incandescence is the emission of light by a solid that has been heated until it glows, or radiates light. For example, when an iron bar is heated to a very high temperature, it initially glows red, and then as its temperature rises, it glows white.

The correct option is A
1, 3, 5, 4 and 2

Incandescence is the emission of light by a solid that has been heated until it glows, or radiates light. For example, when an iron bar is heated to a very high temperature, it initially glows red, and then as its temperature rises, it glows white.