Open App

NEET Exam > NEET Videos > Chemistry Class 11 > Photoelectric Effect

Photoelectric Effect Video Lecture | Chemistry Class 11 - NEET

FAQs on Photoelectric Effect Video Lecture - Chemistry Class 11 - NEET

1. What is the photoelectric effect?

Ans.The photoelectric effect is the phenomenon where electrons are emitted from a material, usually a metal, when it is exposed to light or electromagnetic radiation of sufficient energy. This effect demonstrates the particle nature of light and supports the concept of photons, which are packets of energy.

2. How does the frequency of light affect the photoelectric effect?

Ans.The frequency of light plays a crucial role in the photoelectric effect. Only light with a frequency above a certain threshold can cause the emission of electrons. If the frequency is below this threshold, no electrons will be emitted, regardless of the light's intensity. This relationship is described by the equation E = hf, where E is the energy of the photon, h is Planck's constant, and f is the frequency.

3. What is the work function in the context of the photoelectric effect?

Ans.The work function is the minimum energy required to remove an electron from the surface of a material. It is a characteristic property of the material and is denoted by the symbol φ (phi). If the energy of the incident photons is greater than the work function, electrons can be emitted; if not, no photoelectrons will be released.

4. How does the intensity of light influence the photoelectric effect?

Ans.The intensity of light influences the number of electrons emitted during the photoelectric effect but not their energy. Higher intensity means more photons are hitting the surface of the material, which can lead to the emission of more electrons, provided that the light's frequency exceeds the threshold frequency. However, increasing intensity without increasing frequency will not increase the energy of the emitted electrons.

5. What are some practical applications of the photoelectric effect?

Ans.The photoelectric effect has several practical applications, including in photoelectric sensors, solar panels, and photomultiplier tubes. These technologies rely on the conversion of light energy into electrical energy, enabling devices such as cameras, light meters, and various electronic systems to function effectively.

About this Video

4.65/5 Rating

Oct 15, 2025 Last updated

Related Exams

NEET Class 11 JEE

Video Description: Photoelectric Effect for NEET 2025 is part of Chemistry Class 11 preparation. The notes and questions for Photoelectric Effect have been prepared according to the NEET exam syllabus. Information about Photoelectric Effect covers all important topics for NEET 2025 Exam. Find important definitions, questions, notes, meanings, examples, exercises and tests below for Photoelectric Effect.

Introduction of Photoelectric Effect in English is available as part of our Chemistry Class 11 for NEET & Photoelectric Effect in Hindi for Chemistry Class 11 course. Download more important topics related with notes, lectures and mock test series for NEET Exam by signing up for free.

Description

Video Lecture & Questions for Photoelectric Effect Video Lecture | Chemistry Class 11 - NEET - NEET full syllabus preparation | Free video for NEET exam to prepare for Chemistry Class 11.

Information about Photoelectric Effect

Here you can find the meaning of Photoelectric Effect defined & explained in the simplest way possible. Besides explaining types of Photoelectric Effect theory, EduRev gives you an ample number of questions to practice Photoelectric Effect tests, examples and also practice NEET tests.

	Chemistry Class 11 114 videos\|263 docs\|74 tests

Chemistry Class 11

114 videos|263 docs|74 tests

Join Course for Free

Explore Courses for NEET exam