Which of the following statements is (are) NOT true about the emission of the photoelectrons from metallic surfaces?
i. all metallic surfaces emits the same number of photoelectrons in a given light
ii. most metallic surfaces emit the same number of photoelectrons in visible and infra-red light
iii. a metallic surface emits photoelectrons only if the frequency of the incident light is higher than its own characteristics threshold frequency
i only
ii only
i and ii
ii and iii
iii only
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The selected answer is wrong:
..wrong answer!!!...please do make sure u guys correct that... the only true option there is (iii)to wit...>>a metallic surface emits photoelectrons only if the frequency of the incident light is higher than its own characteristics threshold frequency... others are wrong making them the appropriate answer for this particular question *is (are) NOT true about the emission of the photoelectrons from metallic surfaces*.
..and try and stop doing copy and paste without reviewing.
question from tonad past ques and ans( pg26,ques48)
REF: question from tonad past ques and ans( pg26,ques48)
The correct answer is:
**C. i and ii**
Here's the reasoning:
- **i. All metallic surfaces emit the same number of photoelectrons in a given light** is **NOT true**. Different metals have different properties and thresholds for photoelectron emission, so they do not emit the same number of photoelectrons under the same light conditions.
- **ii. Most metallic surfaces emit the same number of photoelectrons in visible and infra-red light** is also **NOT true**. Different metals have different responses to various frequencies of light, particularly in the visible versus infrared spectrum.
- **iii. A metallic surface emits photoelectrons only if the frequency of the incident light is higher than its characteristic threshold frequency** is **true**. This is a fundamental principle of the photoelectric effect.
Thus, **C. i and ii** are the statements that are NOT true.
๐ข ๐๐ง๐ ๐ข๐ข ๐๐ซ๐ ๐ง๐จ๐ญ ๐ญ๐ซ๐ฎ๐. ๐ข๐ข๐ข ๐ข๐ฌ ๐ญ๐ซ๐ฎ๐ ๐๐จ๐ซ ๐ฉ๐ก๐จ๐ญ๐จ ๐๐ฅ๐๐๐ญ๐ซ๐ข๐ ๐๐ฆ๐ข๐ฌ๐ฌ๐ข๐จ๐ง.
๐๐ฉ๐ญ๐ข๐จ๐ง ๐
.
With my research, the right option is C. The images here are very convincing enough.
..wrong answer!!!...please do make sure u guys correct that... the only true option there is (iii)to wit...>>a metallic surface emits photoelectrons only if the frequency of the incident light is higher than its own characteristics threshold frequency... others are wrong making them the appropriate answer for this particular question *is (are) NOT true about the emission of the photoelectrons from metallic surfaces*.
..and try and stop doing copy and paste without reviewing.
question from tonad past ques and ans( pg26,ques48)
No,d ans is wrong,iii is the only true option dier,i think the question is wrong,it should be TRUE OPTIONS,not "NOT TRUE"
