No products in the cart.

Radiation of frequency 1015 Hz is …

CBSE, JEE, NEET, CUET

CBSE, JEE, NEET, CUET

Question Bank, Mock Tests, Exam Papers

NCERT Solutions, Sample Papers, Notes, Videos

Radiation of frequency 1015 Hz is incident on three photosensitive surfaces A, B and C. Following observations are recorded: Surface A: no photoemission occurs Surface B: photoemission occurs but the photoelectrons have zero kinetic energy. Surface C: photo emission occurs and photoelectrons have some kinetic energy. Using Einstein’s photo-electric equation, explain the three observations

Posted by Jatin Grewal 2 years, 11 months ago

CBSE > Class 12 > Physics

1 answers

Anjan Karthi 2 years, 11 months ago

A must have had a work function greater than 1015h. So, no matter how intense the light is or for how long the radiation has been falling on the surface, neither would electrons gain energy to be emitted out of the surface. But, in the case of B (as per Einstein equation " hv = hv° + eV° "), emission happened but eV° is ZERO. So, Work function = 1015h for B. For C, Work function would be much lesser than 1015h due to which the surface could emit electrons with some eV° with radiation of 1015 Hz.

ANSWER

https://examin8.com

Test

Related Questions

two pith -balls each weighing 10-³ kg are suspended from the same point by means of silk threads -0.5 m long .on charging the balls equally, they are found to repel each other to a distance of 0.2 m .calculate the charge on each ball .

Posted by Preeti Sahu 10 months ago

CBSE > Class 12 > Physics

0 answers

A mirror is turned through 17 degree then the reflected ray is turned by

Posted by Khushbu Otti 1 year, 5 months ago

CBSE > Class 12 > Physics

0 answers

Three charges q,-4q,2q are placed at vertex of equilateral triangle find amount of work done to make its set up

Posted by Manshi Roll No-36,Class Xi-A 1 year, 2 months ago

CBSE > Class 12 > Physics

0 answers

Two metallic sphere of radii 1 cm and 3 cm are given charge of minus 1 into 10 ke power 2 coulomb and 5 x 10 power 2 respectively if these are connected by conducting wire the final charge on the bigger sphere is

Posted by Khushi Aw 1 year, 5 months ago

CBSE > Class 12 > Physics

0 answers

Q.3A Free Proton and a Free Electron are Placed in a Uniform Field. Which of the Two Experiences Greater Force and Greater Acceleration?

Posted by Ayush Rajput 1 year, 5 months ago

CBSE > Class 12 > Physics

1 answers

A pith ball may become charge d by gaining or losing

Posted by Anterpreet Kaur 1 year, 5 months ago

CBSE > Class 12 > Physics

0 answers

what us current

Posted by Shristi Maurya 10 months, 2 weeks ago

CBSE > Class 12 > Physics

2 answers

Lota graph showing the variation of current with voltage for the materials gaas on the graph mark the reason where a resistance is negative and Om is obey

Posted by Siwani Gupta 1 year, 4 months ago

CBSE > Class 12 > Physics

0 answers

Derivation of ohm's law class 12

Posted by Aniket Mahajan 10 months ago

CBSE > Class 12 > Physics

0 answers

A Carbon resistor has three strips of red colour and a gold strip. What is the value of resistor? What is its tolerance?

Posted by Kaviyarasan 2007 1 year, 5 months ago

CBSE > Class 12 > Physics

0 answers

myCBSEguide App

myCBSEguide

Trusted by 1 Crore+ Students

Test Generator

Test Generator

Create papers online. It's FREE.

CUET Mock Tests

CUET Mock Tests

75,000+ questions to practice only on myCBSEguide app

Google Play

Download myCBSEguide App