You visited us 1 times! Enjoying our articles? Unlock Full Access!

Byju's Answer

Standard IX

Chemistry

Cathode Ray Experiment

Assertion :Wh...

Question

Assertion :When we increase the applied voltage in the X-ray tube from 20kV to 40 kV the shortest wavelength of emitted X-rays gets halved. Reason: Doubling the voltage the energy of the incident electrons on the anode gets doubled.

Statement I is True and Statement 2 is True and is a correct explanation of Statement 1.

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

Statement I is True and Statement 2 is True but not a correct explanation of Statement 1.

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Statement I is True and Statement 2 is False

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Statement I is False and Statement 2 is True.

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is A Statement I is True and Statement 2 is True and is a correct explanation of Statement 1.
When the voltage is increased,more electrons i.e. twice the electrons strike the anode so to compensate for the energy the shortest wavelength of emitted x-ray gets halved.

Suggest Corrections

Similar questions

Statement - I: $M g^{2 +} a n d A l^{3 +}$ are isoelectronic but ionic radius $A l^{3 +}$ is less than that of $M g^{2 +}$ .
Statement - II: The effective nuclear charge on the outer-shell electrons in $A l^{3 +}$ is more than that in $M g^{2 +}$

Q. Statement - 1: When ultraviolet light is incident on a photocell, its stopping potential is

V_{0}

and the maximum kinetic energy of the photoelectrons is

K_{m a x}

. When the ultraviolet light is replaced by X - rays, both

V_{0} a n d K_{m a x}

increase.
Statement - 2: Photoelectrons are emitted with speeds ranging from zero to a maximum value because of the range of frequencies present in the incident light.

Q. Each of these questions contains two statements, Statement 1(Assertion) and Statement 2(Reason).

Statement-I : If sum of n terms of a series is

6 n^{2} + 3 n + 1

, then the series is in A.P.

Statement-II : Sum of n terms of an A.P. is always of the form

a n^{2} + b n

, where

a

and

b

are constant.

State which of the following is correct :

(A) Statement-I is true, Statement-II is true ; Statement-II is correct explanation for Statement-I.
(B) Statement-I is true, Statement-II is true ; Statement-II is NOT a correct explanation for Statement-I
(C) Statement-I is true, Statement-II is false
(D) Statement-I is false, Statement-II is true

Statement - I: $C l^{-} a n d C a^{2 +}$ are isoelectronic species.
Statement - II: Isoelectronic species should have same charges.

Q. Statement I The first ionisation energy of Be is greater than that of B.
Statement II 2p-orbital is lower in energy than 2s (J2000, (s), 1M)

Join BYJU'S Learning Program

Assertion :When we increase the applied voltage in the X-ray tube from 20kV to 40 kV the shortest wavelength of emitted X-rays gets halved. Reason: Doubling the voltage the energy of the incident electrons on the anode gets doubled.

The correct option is A Statement I is True and Statement 2 is True and is a correct explanation of Statement 1.When the voltage is increased,more electrons i.e. twice the electrons strike the anode so to compensate for the energy the shortest wavelength of emitted x-ray gets halved.

The correct option is A Statement I is True and Statement 2 is True and is a correct explanation of Statement 1.
When the voltage is increased,more electrons i.e. twice the electrons strike the anode so to compensate for the energy the shortest wavelength of emitted x-ray gets halved.