Physics, asked by minnupeter, 7 months ago

The threshold wavelength for photoelectric emission
from a material is 5200 A. Photoelectrons will be emitted,
when the material is illuminated with monochromatic
radiation from
(a) 50 W infrared lamp (b) 1 W infrared lamp
(c) 50 W ultraviolet lamp (d) 1 W ultraviolet lamp​

Answers

Answered by shreyanangare
2

Answer:

Hello there... here to help you :)

Answer is ...

D) 1 W ultravoilet lamp...

The threshold wavelength is 5200

A

˙

. For a photoelectric emission to take place the wavelength of incident light must be less than the threshold value. The wavelength of UV rays is 100−4000

A

˙

. so Photoelectrons will be emitted when this material is illuminated with monochromatic radiation from a 1W ultraviolet lamp.

Previous Question
Next Question
Similar questions
Geography, 3 months ago
मध्यस्थ बैंक अर्थात क्या​...
Math, 3 months ago
19. find the complement of each of the following angles: i)20° ii)63° iii)57°​...
English, 3 months ago
2. Find the radius of curvature at any point a on the curve x=3acosa – acos3a y= 3asina – asin3a​...
Science, 7 months ago
50 kg wheat has been brought to your home what will you do to take care of it​...
Math, 7 months ago
identify the greater number in each of the following a) (-5)³ or (-2)⁵ b) (-7)² or (-4)⁴ please give step by step answer with positive and negative si Step-by-step explanation: -5³=-25 -2⁵=-32 therefore, -25>-32 -7²=49 -4⁴=256. therefore, 256>49 some one answered this question but i'm not understanding why in a there is taken negative sign and in b positive sign taken . please answer me its...
English, 11 months ago
In India , medicines have traditionally been prepared from plants, spices and​...
Biology, 11 months ago
respiration is called cellular respiration explain​...
Social Sciences, 11 months ago
process of developing industries in a country or an area​...