Physics WAEC

The work function of a metal is 4.65ev and the metal is illuminated with a radiation of 6.86ev. What is the kinetic energy of the electrons ejected from the surface of the metal?

A. 1.48ev
B. 2.21ev
C. 4.42ev
D. 5.75ev
E. 11.51ev

Correct Answer:

Option B = 2.21ev

Explanation

K.E = ½mv²

E – W = 6.86 – 4.65

= 2.21ev

Sunday

Share
Published by
Sunday
Tags: physics
5 years ago

Recent Posts

ETM 312 Theory Questions: Land Law and the Consequences of Unauthorized Land Transfers in Nigeria

300 Level Estate Management and Valuation Department exam questions and detailed answers. Download the answers…

5 months ago

ETM 312 Theory Questions: Co-Ownership Structures and Land Acquisition Methods in Nigeria

200 Level Estate Management and Valuation Department exam questions and detailed answers. Download the answers…

5 months ago

ETM 312 Theory Questions: Rights in Community Land and Fundamental Land Concepts in Nigeria

200 Level Estate Management and Valuation Department exam questions and detailed answers. Download the answers…

5 months ago

ETM 312 Theory Questions: Customary Land Control and the Origins of Nigeria’s Land Use Act

200 Level Estate Management and Valuation Department exam questions and detailed answers. Download the answers…

5 months ago

ETM 312 Theory Questions: Land Ownership Principles and Transaction Laws in Nigeria

200 Level Estate Management and Valuation Department exam questions and detailed answers. Download the answers…

5 months ago

ETM 226 Theory Questions: Trespass: Types and Defenses in Property Law

200 Level Estate Management and Valuation Department exam questions and detailed answers. Download the answers…

5 months ago