Physics-

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Easy

Question

If the potential difference between the anode and cathode of the X-ray tube is increases

The peaks at R and S would move to shorter wavelength
The peaks at R and S would remain at the same wavelength
The cut off wavelength at P would decrease
(b) and (c) both are correct

The correct answer is: (b) and (c) both are correct

Peaks on the graph represent characteristic X-ray spectrum. Every peak has a certain wavelength, which depends upon the transition of electron inside the atom of the target. While $lambda subscript m i n end subscript$ depends upon the accelerating voltage (As. $lambda subscript m i n end subscript$ ).

Two large parallel plates are connected with the terminal of 100 V power supply. These plates have a fine hole at the centre. An electron having energy 200 eV is so directed that it passes through the holes. When it comes out it's de-Broglie wavelength is

Physics-General

General

Physics-

Light of wavelength 2475 Å is incident on barium. Photoelectrons emitted describe a circle of radius 100 cm by a magnetic field of flux density $fraction numerator 1 over denominator square root of 17 end fraction cross times 1 0 to the power of negative 5 end exponent$ Tesla. Work function of the barium is (Given $fraction numerator e over denominator m end fraction equals 1.7 cross times 1 0 to the power of 11 end exponent right parenthesis$

Physics-General

General

Physics-

If a voltage applied to an X-ray tube is increased to 1.5 times the minimum wavelength $left parenthesis lambda subscript m i n end subscript$ of an X-ray continuous spectrum shifts by $capital delta lambda equals 26 p m$ . The initial voltage applied to the tube is

Physics-General

General

Physics-

The figure shows different graphs between stopping potential $left parenthesis V subscript 0 end subscript right parenthesis$ and frequency (n) for photosensitive surface of cesium, potassium, sodium and lithium. The plots are parallel. Correct ranking of the targets according to their work function greatest first will be

Physics-General

General

Maths-

f(x) = $open curly brackets table row cell 2 x minus 1 end cell cell i f end cell cell x greater than 2 end cell row k cell i f end cell cell x equals 2 end cell row cell x to the power of 2 end exponent minus 1 end cell cell i f end cell cell x less than 2 end cell end table close$ is continuous at x = 2 then k =

Maths-General

General

Maths-

$f open parentheses x close parentheses equals open square brackets x minus 5 close square brackets plus open square brackets 5 minus x close square brackets blank$ is continuous on

Maths-General

General

The value of f (0) so that f(x) = $open parentheses 1 plus 5 x close parentheses to the power of 1 divided by x end exponent$ is continuous at x = 0 is

We have to be careful that denominator is not zero. We have to readjust the function in a way we will not get zero at denominator for the function to be continuous at that point. And, we have to know different formulas of limit.

The value of f (0) so that f(x) = $open parentheses 1 plus 5 x close parentheses to the power of 1 divided by x end exponent$ is continuous at x = 0 is

GeneralGeneral

General

Maths-

If $blank f open parentheses x close parentheses equals fraction numerator e to the power of fraction numerator 1 over denominator x to the power of 2 end exponent end fraction end exponent over denominator e to the power of fraction numerator 1 over denominator x to the power of 2 end exponent end fraction end exponent minus 1 end fraction comma x not equal to 0 comma f open parentheses 0 close parentheses equals 1 blank$ then $f blank$ at $blank x equals 0 blank$ is

Maths-General

General

Maths-

$fraction numerator t a n blank 80 to the power of 0 end exponent blank minus blank t a n blank 10 to the power of 0 end exponent over denominator t a n invisible function application 70 to the power of 0 end exponent blank end fraction$

Maths-General

General

Maths-

A point moves so that the ratio of its distances from two fixed points is constant Its Iocus is a

Maths-General

General

Maths-

The points $left parenthesis 4 comma blank 7 comma blank 8 right parenthesis$ , $left parenthesis 2 comma blank 3 comma blank 4 right parenthesis$ , $left parenthesis negative 1 comma blank minus 2 , 1 right parenthesis$ and $left parenthesis 1 comma blank 2 comma blank 5 right parenthesis$ are

Maths-General

General

Maths-

The shortest distance of the point from $P left parenthesis x subscript 1 to the power of 1 end exponent end subscript gamma subscript 1 to the power of 1 end exponent end subscript z subscript 1 end subscript right parenthesis$ on the $chi$ ‐axis is equal to

Maths-General

General

Maths-

If cos $alpha$ + cos $beta$ = 0 = sin $alpha$ + sin $beta$ then cos ( $alpha$ - $beta$ ) =

Maths-General

General

Maths-

If $P left parenthesis 2 , 3 comma blank minus 6 right parenthesis$ and $Q left parenthesis 3 comma blank minus 4 , 5 right parenthesis$ are two points, the direction cosines of the line $P 0$ are

Maths-General

General

Maths-

The equation of a plane passing through the line of intersection of the planes $chi plus gamma plus z equals 5$ and $2 x minus gamma plus 3 z equals 1$ and parallel to the line $gamma equals z equals 0$ is

Maths-General

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If the potential difference between the anode and cathode of the X-ray tube is increases

The peaks at R and S would move to shorter wavelength The peaks at R and S would remain at the same wavelength The cut off wavelength at P would decrease (b) and (c) both are correct

The correct answer is: (b) and (c) both are correct

Peaks on the graph represent characteristic X-ray spectrum. Every peak has a certain wavelength, which depends upon the transition of electron inside the atom of the target. While depends upon the accelerating voltage (As. ).

Related Questions to study

Two large parallel plates are connected with the terminal of 100 V power supply. These plates have a fine hole at the centre. An electron having energy 200 eV is so directed that it passes through the holes. When it comes out it's de-Broglie wavelength is

Two large parallel plates are connected with the terminal of 100 V power supply. These plates have a fine hole at the centre. An electron having energy 200 eV is so directed that it passes through the holes. When it comes out it's de-Broglie wavelength is

Light of wavelength 2475 Å is incident on barium. Photoelectrons emitted describe a circle of radius 100 cm by a magnetic field of flux density Tesla. Work function of the barium is (Given

Light of wavelength 2475 Å is incident on barium. Photoelectrons emitted describe a circle of radius 100 cm by a magnetic field of flux density Tesla. Work function of the barium is (Given

If a voltage applied to an X-ray tube is increased to 1.5 times the minimum wavelength of an X-ray continuous spectrum shifts by . The initial voltage applied to the tube is

If a voltage applied to an X-ray tube is increased to 1.5 times the minimum wavelength of an X-ray continuous spectrum shifts by . The initial voltage applied to the tube is

The figure shows different graphs between stopping potential and frequency (n) for photosensitive surface of cesium, potassium, sodium and lithium. The plots are parallel. Correct ranking of the targets according to their work function greatest first will be

The figure shows different graphs between stopping potential and frequency (n) for photosensitive surface of cesium, potassium, sodium and lithium. The plots are parallel. Correct ranking of the targets according to their work function greatest first will be

f(x) = is continuous at x = 2 then k =

f(x) = is continuous at x = 2 then k =

is continuous on

is continuous on

The value of f (0) so that f(x) = is continuous at x = 0 is

The value of f (0) so that f(x) = is continuous at x = 0 is

Ifthen atis

Ifthen atis

A point moves so that the ratio of its distances from two fixed points is constant Its Iocus is a

A point moves so that the ratio of its distances from two fixed points is constant Its Iocus is a

The points , , and are

The points , , and are

The shortest distance of the point from on the ‐axis is equal to

The shortest distance of the point from on the ‐axis is equal to

If cos + cos = 0 = sin + sin then cos ( - ) =

If cos + cos = 0 = sin + sin then cos ( - ) =

If and are two points, the direction cosines of the line are

If and are two points, the direction cosines of the line are

The equation of a plane passing through the line of intersection of the planes and and parallel to the line is

The equation of a plane passing through the line of intersection of the planes and and parallel to the line is

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The peaks at R and S would move to shorter wavelength
The peaks at R and S would remain at the same wavelength
The cut off wavelength at P would decrease
(b) and (c) both are correct

If a voltage applied to an X-ray tube is increased to 1.5 times the minimum wavelength $left parenthesis lambda subscript m i n end subscript$ of an X-ray continuous spectrum shifts by $capital delta lambda equals 26 p m$ . The initial voltage applied to the tube is

If a voltage applied to an X-ray tube is increased to 1.5 times the minimum wavelength $left parenthesis lambda subscript m i n end subscript$ of an X-ray continuous spectrum shifts by $capital delta lambda equals 26 p m$ . The initial voltage applied to the tube is

$f open parentheses x close parentheses equals open square brackets x minus 5 close square brackets plus open square brackets 5 minus x close square brackets blank$ is continuous on

$f open parentheses x close parentheses equals open square brackets x minus 5 close square brackets plus open square brackets 5 minus x close square brackets blank$ is continuous on

The value of f (0) so that f(x) = $open parentheses 1 plus 5 x close parentheses to the power of 1 divided by x end exponent$ is continuous at x = 0 is

The value of f (0) so that f(x) = $open parentheses 1 plus 5 x close parentheses to the power of 1 divided by x end exponent$ is continuous at x = 0 is

The points $left parenthesis 4 comma blank 7 comma blank 8 right parenthesis$ , $left parenthesis 2 comma blank 3 comma blank 4 right parenthesis$ , $left parenthesis negative 1 comma blank minus 2 , 1 right parenthesis$ and $left parenthesis 1 comma blank 2 comma blank 5 right parenthesis$ are

The points $left parenthesis 4 comma blank 7 comma blank 8 right parenthesis$ , $left parenthesis 2 comma blank 3 comma blank 4 right parenthesis$ , $left parenthesis negative 1 comma blank minus 2 , 1 right parenthesis$ and $left parenthesis 1 comma blank 2 comma blank 5 right parenthesis$ are

The shortest distance of the point from $P left parenthesis x subscript 1 to the power of 1 end exponent end subscript gamma subscript 1 to the power of 1 end exponent end subscript z subscript 1 end subscript right parenthesis$ on the $chi$ ‐axis is equal to

The shortest distance of the point from $P left parenthesis x subscript 1 to the power of 1 end exponent end subscript gamma subscript 1 to the power of 1 end exponent end subscript z subscript 1 end subscript right parenthesis$ on the $chi$ ‐axis is equal to

If cos $alpha$ + cos $beta$ = 0 = sin $alpha$ + sin $beta$ then cos ( $alpha$ - $beta$ ) =

If cos $alpha$ + cos $beta$ = 0 = sin $alpha$ + sin $beta$ then cos ( $alpha$ - $beta$ ) =

If $P left parenthesis 2 , 3 comma blank minus 6 right parenthesis$ and $Q left parenthesis 3 comma blank minus 4 , 5 right parenthesis$ are two points, the direction cosines of the line $P 0$ are

If $P left parenthesis 2 , 3 comma blank minus 6 right parenthesis$ and $Q left parenthesis 3 comma blank minus 4 , 5 right parenthesis$ are two points, the direction cosines of the line $P 0$ are

The equation of a plane passing through the line of intersection of the planes $chi plus gamma plus z equals 5$ and $2 x minus gamma plus 3 z equals 1$ and parallel to the line $gamma equals z equals 0$ is

The equation of a plane passing through the line of intersection of the planes $chi plus gamma plus z equals 5$ and $2 x minus gamma plus 3 z equals 1$ and parallel to the line $gamma equals z equals 0$ is