Thank you for registering.

One of our academic counsellors will contact you within 1 working day.

Please check your email for login details.
Close
MY CART (5)

Use Coupon: CART20 and get 20% off on all online Study Material

ITEM
DETAILS
MRP
DISCOUNT
FINAL PRICE
Total Price: Rs.

⇐ BackProceed to Checkout ⇒
There are no items in this cart.
Continue Shopping

i need an answer with the usage of logarithm 2:55 am A photon of wavelength 4 × 10–7 m strikes on metal surface, the work function of the metal being 2.13 eV. Calculate (i) the energy of the photon (eV), (ii) the kinetic energy of the emission, and (iii) the velocity of the photoelectron (1 eV= 1.6020 × 10–19 J) this is the question especially 3rd question

i need an answer with the usage of logarithm

2:55 amA photon of wavelength 4 × 10–7 m strikes on metal surface, the work function of the metal being 2.13 eV. Calculate (i) the energy of the photon (eV), (ii) the kinetic energy of the emission, and (iii) the velocity of the photoelectron (1 eV= 1.6020 × 10–19 J)

this is the question

especially 3rd question

Grade:10

1 Answers

Umakant biswal
5359 Points
5 years ago
@ shashan 
i will give you the approach to this question , 
first calculate the energy of the phototn , that is the frst bit question . 
as u knw 
E= HV = H C / LAMBDA 
U KNW THE VALUE OF LAMBDA . just put the value h is planks constant and c is the speed of light 
once u got the energy 
now , apply the following formula 
E= KE+work function
work function value u knows , e value as calculated in the beginning . 
just put the value , u will get the kinetic energy . 
and coming to the 3rd bit , 
apply the following formula 
K.E = ½ mv square 
u have k.e as calculated above , u know the mass of electron , only u hv to calculate velocity square , just put the value nd calculate , after getting veocity square , just put a root over in it to get the velocity . 
HOPE U CAN DO THAT 
ALL THE BEST , 
 

Think You Can Provide A Better Answer ?

Provide a better Answer & Earn Cool Goodies See our forum point policy

Other Related Questions on Organic Chemistry

View all Questions »

ASK QUESTION

Get your questions answered by the expert for free

Register ICAT

Answer and earn gift vouchers

Win Gift vouchers upto Rs 500/-

View courses by askIITians

Design classes One-on-One in your own way with Top IITians/Medical Professionals

Click Here Know More

Complete Self Study Package designed by Industry Leading Experts

Click Here Know More

Live 1-1 coding classes to unleash the Creator in your Child

Click Here Know More

a Complete All-in-One Study package Fully Loaded inside a Tablet!

Click Here Know More