The characteristic X- ray radiation is emitted, when - Vidyadip

MCQ

The characteristic $X-$ ray radiation is emitted, when

A
The electrons are accelerated to a fixed energy
B
The source of electrons emits a monoenergetic beam
✓
The bombarding electrons knock out electrons from the inner shell of the target atoms and one of the outer electrons falls into this vacancy
D
The valence electrons in the target atoms are removed as a result of the collision

✓

Answer

Correct option: C.

The bombarding electrons knock out electrons from the inner shell of the target atoms and one of the outer electrons falls into this vacancy

c
The characteristic $X-$ray radiation is emitted, when the bombarding electrons knock out electrons from the inner shell of the target atoms and one of the outer electrons falls into this vacancy.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

NEET STD 11 Science question papers→Gujarat Board STD 11 Science question papers→Gujarat Board question paper generator→

Similar questions

Two identical balls $A$ and $B$ are released from the positions shown in figure. They collide elastically on horizontal portion $MN$. The ratio of the height attained by $A$ and $B$ after collision will be: (neglect friction)

A solid cylinder of density $\rho_0$, cross-section area $A$ and length $l$ floats in a liquid $\rho(> \rho_0)$ with its axis vertical, as shown. If it is slightly displaced downward and released, the time period will be

Reactant $(A)$ is

In the given circuit the input voltage $V _{\text {in }}$ is shown in figure. The cut-in voltage of $p - n$ junction diode ( $D_{1}$ or $D_{2}$ ) is $0.6\,V$. Which of the following output voltage $\left( V _{0}\right)$ waveform across the diode is correct?

Water is flowing through a channel (lying in a vertical plane) as shown in the figure. Three sections $A, B$ and $C$ are shown. Sections $B$ and $C$ have equal area of cross section. If $P_A, P_B$ and $P_C$ are the pressures at $A, B$ and $C$ respectively then

The efficiency of a thermodynamic cycle $1-2-3- 1 ($see picture$)$ is $20\%$ and for another thermodynamic cycle $1 - 3-4 - 1$ efficiency is equal to $10\%$. Determine the efficiency $\eta ($ in $\%)$ of the thermodynamic cycle $1-2-3-4- 1.$The gas is assumed to be ideal

A block of mass $5\,kg$ starting from rest pulled up on a smooth incline plane making an angle of $30^{\circ}$ with horizontal with an affective acceleration of $1\,ms ^{-2}$. The power delivered by the pulling force at $t =10\,s$ from the start is $.....\,W.$ $\left[\right.$ Use $\left.g =10\,ms ^{-2}\right]$ (calculate the nearest integer value)

A non-conducting ring of radius $0.5\,m$ carries a total charge of $1.11 \times {10^{ - 10}}\,C$ distributed non-uniformly on its circumference producing an electric field $\vec E$ everywhere in space. The value of the line integral $\int_{l = \infty }^{l = 0} {\, - \overrightarrow E .\overrightarrow {dl} } \,(l = 0$ being centre of the ring) in volt is

Which of the following quantities do not change when a resistor connected to a battery is heated due to the current?

If particle is executing simple harmonic motion with time period $T$, then the time period of its total mechanical energy is ...........