QBManager

Dual nature of radiation and Matter

142648 According to Moseley's law, the frequency (v) of the $K_{α}$ line and the atomic number $Z$ of the element have the relation ( $A$ and $B$ are constants)

1

\frac{v}{(Z - A)} = B

2

\frac{\sqrt{v}}{(Z - A)} = B

3

v (Z - A) = B

4

v (Z - A)^{2} = B

Explanation:

B We know that,
According to the Moseley's law frequency (v) of the $K_{a}$ line with atomic number $Z$ and constant $A$ and $B$
$\sqrt{v} = B (Z - A)$
Then, $B = \frac{\sqrt{v}}{(Z - A)}$

AP EAMCET-2005

Dual nature of radiation and Matter

142651 When X-rays are produced

1 heat is generated at the target

2 heat is absorbed at the target

3 the temperature of the target remains constant

4 brilliant light is seen at the target

Explanation:

A When the high-speed electron beam is a strike on the metal base, it generate excessive heat and $X$ -rays are produced.

NDA (I) 2010

Dual nature of radiation and Matter

142620 A direct X-ray photograph of the intenstines is not generally taken by radiologists because

1 intestines would burst an exposure to X-rays

2 the X-rays would be not pass through the intestines

3 the X-rays will pass through the intestines without causing a good shadow for any useful diagnosis

4 a very small exposure of X-rays causes cancer in the intestines

Explanation:

C A direct X-ray photograph of the intenstines is not generally taken by radiologist because the $X$ -rays will pass through the intestines without causing a good shadow for any useful diagnosis.

VITEEE-2012

Dual nature of radiation and Matter

142652 What maximum frequency can be reflected from ionosphere?

1

5 MHz

2

6 GHz

3

5 kHz

4

500 MHz

Explanation:

A The maximum frequency can be reflected from ionosphere is $5 MHz$ .

JCECE-2007

Dual nature of radiation and Matter

142648 According to Moseley's law, the frequency (v) of the $K_{α}$ line and the atomic number $Z$ of the element have the relation ( $A$ and $B$ are constants)

1

\frac{v}{(Z - A)} = B

2

\frac{\sqrt{v}}{(Z - A)} = B

3

v (Z - A) = B

4

v (Z - A)^{2} = B

Explanation:

B We know that,
According to the Moseley's law frequency (v) of the $K_{a}$ line with atomic number $Z$ and constant $A$ and $B$
$\sqrt{v} = B (Z - A)$
Then, $B = \frac{\sqrt{v}}{(Z - A)}$

AP EAMCET-2005

Dual nature of radiation and Matter

142651 When X-rays are produced

1 heat is generated at the target

2 heat is absorbed at the target

3 the temperature of the target remains constant

4 brilliant light is seen at the target

Explanation:

A When the high-speed electron beam is a strike on the metal base, it generate excessive heat and $X$ -rays are produced.

NDA (I) 2010

Dual nature of radiation and Matter

142620 A direct X-ray photograph of the intenstines is not generally taken by radiologists because

1 intestines would burst an exposure to X-rays

2 the X-rays would be not pass through the intestines

3 the X-rays will pass through the intestines without causing a good shadow for any useful diagnosis

4 a very small exposure of X-rays causes cancer in the intestines

Explanation:

C A direct X-ray photograph of the intenstines is not generally taken by radiologist because the $X$ -rays will pass through the intestines without causing a good shadow for any useful diagnosis.

VITEEE-2012

Dual nature of radiation and Matter

142652 What maximum frequency can be reflected from ionosphere?

1

5 MHz

2

6 GHz

3

5 kHz

4

500 MHz

Explanation:

A The maximum frequency can be reflected from ionosphere is $5 MHz$ .

JCECE-2007

Dual nature of radiation and Matter

142648 According to Moseley's law, the frequency (v) of the $K_{α}$ line and the atomic number $Z$ of the element have the relation ( $A$ and $B$ are constants)

1

\frac{v}{(Z - A)} = B

2

\frac{\sqrt{v}}{(Z - A)} = B

3

v (Z - A) = B

4

v (Z - A)^{2} = B

Explanation:

B We know that,
According to the Moseley's law frequency (v) of the $K_{a}$ line with atomic number $Z$ and constant $A$ and $B$
$\sqrt{v} = B (Z - A)$
Then, $B = \frac{\sqrt{v}}{(Z - A)}$

AP EAMCET-2005

Dual nature of radiation and Matter

142651 When X-rays are produced

1 heat is generated at the target

2 heat is absorbed at the target

3 the temperature of the target remains constant

4 brilliant light is seen at the target

Explanation:

A When the high-speed electron beam is a strike on the metal base, it generate excessive heat and $X$ -rays are produced.

NDA (I) 2010

Dual nature of radiation and Matter

142620 A direct X-ray photograph of the intenstines is not generally taken by radiologists because

1 intestines would burst an exposure to X-rays

2 the X-rays would be not pass through the intestines

3 the X-rays will pass through the intestines without causing a good shadow for any useful diagnosis

4 a very small exposure of X-rays causes cancer in the intestines

Explanation:

C A direct X-ray photograph of the intenstines is not generally taken by radiologist because the $X$ -rays will pass through the intestines without causing a good shadow for any useful diagnosis.

VITEEE-2012

Dual nature of radiation and Matter

142652 What maximum frequency can be reflected from ionosphere?

1

5 MHz

2

6 GHz

3

5 kHz

4

500 MHz

Explanation:

A The maximum frequency can be reflected from ionosphere is $5 MHz$ .

JCECE-2007

Dual nature of radiation and Matter

142648 According to Moseley's law, the frequency (v) of the $K_{α}$ line and the atomic number $Z$ of the element have the relation ( $A$ and $B$ are constants)

1

\frac{v}{(Z - A)} = B

2

\frac{\sqrt{v}}{(Z - A)} = B

3

v (Z - A) = B

4

v (Z - A)^{2} = B

Explanation:

B We know that,
According to the Moseley's law frequency (v) of the $K_{a}$ line with atomic number $Z$ and constant $A$ and $B$
$\sqrt{v} = B (Z - A)$
Then, $B = \frac{\sqrt{v}}{(Z - A)}$

AP EAMCET-2005

Dual nature of radiation and Matter

142651 When X-rays are produced

1 heat is generated at the target

2 heat is absorbed at the target

3 the temperature of the target remains constant

4 brilliant light is seen at the target

Explanation:

A When the high-speed electron beam is a strike on the metal base, it generate excessive heat and $X$ -rays are produced.

NDA (I) 2010

Dual nature of radiation and Matter

142620 A direct X-ray photograph of the intenstines is not generally taken by radiologists because

1 intestines would burst an exposure to X-rays

2 the X-rays would be not pass through the intestines

3 the X-rays will pass through the intestines without causing a good shadow for any useful diagnosis

4 a very small exposure of X-rays causes cancer in the intestines

Explanation:

C A direct X-ray photograph of the intenstines is not generally taken by radiologist because the $X$ -rays will pass through the intestines without causing a good shadow for any useful diagnosis.

VITEEE-2012

Dual nature of radiation and Matter

142652 What maximum frequency can be reflected from ionosphere?

1

5 MHz

2

6 GHz

3

5 kHz

4

500 MHz

Explanation:

A The maximum frequency can be reflected from ionosphere is $5 MHz$ .

JCECE-2007

Question Bank Series

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