# if the momentum of an electron is changed by p

### Mohammed

Guys, does anyone know the answer?

get if the momentum of an electron is changed by p from screen.

## If the momentum of an electron is changed by P, then the de Broglie wavelength associated with it changes by 0.5 % . The initial momentum of electron will be:

If the momentum of an electron is changed by P, then the de Broglie wavelength associated with it changes by 0.5 % . The initial momentum of electron will be:

Byju's Answer Standard XII Physics Line Spectra If the moment... Question

If the momentum of an electron is changed by P, then the de-Broglie wavelength associated with it changes by 0.5%. The initial momentum of electron will be:

A 200P B 400P C P 200 D 100P Open in App Solution

The correct option is **B**

200P λ = h p

[de -Brogli wavelength]

P = h λ Δ P P = − Δ λ λ P P i n i t i a l = 0.5 100 P i n i t i a l = 200 P Suggest Corrections 23

SIMILAR QUESTIONS

**Q.**If the momentum of an electron is changed by

p m

, then the de Broglie wavelength associated with it increased by

0.5 %

. The initial momentum of electron will be

**Q.**

If the momentum of an electron is increased by

Δ p

, then the de-Broglie wavelength associated with it changes by 0.50%. The initial momentum of the electron will be

**Q.**Find the initial momentum of electron if the momentum of electron is changed by

P m

and the de Broglie wavelegth associated with it changes by

0.50 %.

**Q.**The de-Broglie wavelength associated with a proton changes by 0.25% if its momentum is changed by

P o

. The initial momentum of proton is

RELATED VIDEOS

Line Spectra PHYSICS Watch in App EXPLORE MORE Line Spectra

Standard XII Physics

## If the momentum of an electron is changed by P, then the de

Click here👆to get an answer to your question ✍️ If the momentum of an electron is changed by P, then the de - Broglie wavelength associated with it changes by 0.5

Question

## If the momentum of an electron is changed by P, then the de-Broglie wavelength associated with it changes by 0.5%. The initial momentum of an electron will be:

**A**

## 400P

**B**

200 P

**C**

## 100P

**D**

## 200P

Medium Open in App

Updated on : 2022-09-05

Solution Verified by Toppr

Correct option is D)

According to de-Broglie relation:λ= p h

Let, initial momentum =p

1

and associated wavelength is λ

1

and with a decrease in wavelength, momentum will increase.

Thus, Δp=−P and for Δλ=

100 0.5 ×λ 1

Differentiating the de-Broglie relation we get:

λ 1 Δλ =− p 1 Δp and λ 1 0.005×λ 1 = p 1 P = 100 0.5 p 1 =200P

Option D is correct.

Video Explanation

Solve any question of Dual Nature of Radiation And Matter with:-

Patterns of problems

>

Was this answer helpful?

149 15

## If the momentum of an electron is changed by p, then the de

WE know that lambda=h/P :. Dlambda=-h/(P^(2))dP, (dlambda)/lambda=(-h/(P^(2))dP)/(h//P)=-(dP)/P=(dP)/P (in magnitude) Given (dlambda)/lambda=0.5/100 , dP=P. Let the initial momentum be P(0). Then P/(P(0))=(dlambda)/lambda=0.5/100 or P(0)=100/0.5P=200P

If the momentum of an electron is changed by

p

, then the de - Broglie wavelength associated with it changes by

0.5 %

. The initial momentum of electron will be

Video Player is loading.

PRADEEP-DUAL NATURE OF RADIATION AND MATTER-EXERCISE

20 VIDEOS ADVERTISEMENT

Ab Padhai karo bina ads ke

Khareedo DN Pro and dekho sari videos bina kisi ad ki rukaavat ke!

1 day ₹5 ₹1 ₹7 / week Buy 1 month ₹149 ₹49 ₹49 / month Buy 1 year ₹749 ₹365 ₹30 / month Buy

Updated On: 27-06-2022

Text Solution A 200 P B 400 P C P 200 D 100 P Answer

The correct Answer is a

Solution WE know that λ = h P ∴ D λ = − h P 2 d P , d λ λ = − h P 2 d P h / P = − d P P = d P P

(in magnitude) Given

d λ λ = 0.5 100 , d P = P .

Let the initial momentum be

P 0 . Then P P 0 = d λ λ = 0.5 100 or P 0 = 100 0.5 P = 200 P Answer

Step by step solution by experts to help you in doubt clearance & scoring excellent marks in exams.

Related Videos BOOK - PRADEEP

CHAPTER - DUAL NATURE OF RADIATION AND MATTER

EXERCISE - Value based question

1 videos

DUAL NATURE OF RADIATION AND MATTER

BOOK - PRADEEP

CHAPTER - CURRENT ELECTRICITY

EXERCISE - Problems for Practice (B)

2 videos CURRENT ELECTRICITY BOOK - PRADEEP

CHAPTER - ELECTROMAGNETIC INDUCTION & ALTERNATING CURRENT

EXERCISE - Multiple Choice Questions

1 videos

ELECTROMAGNETIC INDUCTION & ALTERNATING CURRENT

If the momentum of an electron is changed by

Δ p

, then the de - Broglie wavelength associated with it changes by

0.50 %

. The initial momentum of the electron will be

11969680 02:02

If the momentum of an electron is changed by p , then the de - Broglie wavelength associated with it changes by 0.5 % . The initial momentum of electron will be

11969778 01:41

The de-broglie wavelength associated with photon changes by 0.25%. If its momentum is changed by

9 × 10 − 26 k g m s − 1

, find the initial momentum of electron.

12015844 03:41

If the momentum of electron is changed by

P m

then the de-Broglie wavelength associated with it changes by 0.50%. The initial momentum of electron will be:

16757074 01:50

Find the initial momentum of electron if the momentum of electron is changed by p_(m) and the De Brogile wavelength associated with it changed by 0.50%

32500701 03:25

The de Broglie wavelength associated with proton changes by 0.25% if its momentum is changed by p_(0) . The initial momentum was

157409980 03:32

किसी इलेक्ट्रॉन के संवेग को

β

से परिवर्तित करने पर उससे संबद्ध दे ब्रॉग्ली तरंगदैर्ग्य

0 ⋅ 5 %

परिवर्तित हो जाता है। इलेक्ट्रॉन का प्रारंभिक संवेग होगा-

188267889 04:12

यदि इलेक्ट्रॉन का संवेग

Δ p

से परिवर्तित होता है तो इसकी संगत डी - ब्रॉग्ली तरंगदैर्ध्य 0.5 % से परिवर्तित होती है | इलेक्ट्रॉन का प्रारम्भिक संवेग क्या होगा ?

291434657 04:56

किसी इलेक्ट्रॉन का संवेग का p से परिवर्तन करने पर उससे सम्बद्ध डी - ब्रॉग्ली तरंगदैर्ध्य 0.5% परिवर्तित हो जाती है, तो इलेक्ट्रॉन का प्रारम्भिक संवेग होगा -

291435233 06:39

If the momentum of electron is changed by p_(m) then the de-Broglie wavelength associated with it changes by 0.50%. The initial momentum of electron will be :

415585512 03:32

If the momentum of an electron changes to p, then the corresponding de Broglie wavelength changes by 0.5%, the initial momentum of the electron

498179543 01:45

एक इलेक्ट्रॉन का दे ब्रोग्ली तरंगदैर्घ्य , संवेग के साथ व्युत्क्रम रूप से परिवर्तित होता है।

540827200 01:44

If the initial momentum of electron is

P i

and the De broglie wavelength associated with it changes by 1% .Find the change in momentum

( Δ P ) of electron :- 592793500 02:22

If the momentum of an electron is changed by p , then the de - Broglie wavelength associated with it changes by 0.5 % . The initial momentum of electron will be

642750561 02:34

If the momentum of an electron is changed by Delap, then the de-Broglie wavelength associated with it changes by 0.50%. The initial momentum of the electron will be

645750863 Text Solution

किसी इलेक्ट्रॉन के संवेग को p से परिवर्तन करने पर उससे संबद्ध दे-ब्रोग्ली तरंगदैर्ध्य 0.5% परिवर्तित हो जाती है। तो, इलेक्ट्रॉन का प्रारम्भिक संवेग होगा।

645777390 06:39

Guys, does anyone know the answer?