Photoelectric Effect Experiment Concepts

The video tutorial demonstrates the determination of Planck's constant using the photoelectric effect. It covers the setup of a photo cell, conducting the experiment by adjusting various settings, and analyzing the results through graph interpretation. Key precautions are also highlighted to ensure accurate results.

What is the primary goal of the experiment discussed in the video?

• To measure the speed of light

• To determine Planck's constant using the photoelectric effect

• To calculate the gravitational constant

• To find the charge of an electron

Which component is NOT part of the equipment described in the video?

• Voltage adjuster

• Light emitting source

• Current multiplier

• Temperature gauge

What is the role of the current multiplier in the experiment?

• To scale the current measurement

• To measure the voltage

• To change the wavelength

• To adjust the light intensity

What is the first step in setting up the experiment?

• Switch on the light source

• Replace the protective cover with a filter

• Set the voltage direction to negative

• Adjust the current multiplier

How is the photocurrent reduced to zero during the experiment?

• By decreasing the de-accelerating voltage

• By adjusting the current multiplier

• By increasing the light intensity

• By increasing the de-accelerating voltage

What does the slope of the observed graph represent?

• The work function

• The wavelength of light

• Planck's constant divided by the charge of an electron

• The speed of light

Which precaution is NOT mentioned in the video?

• Ensure the voltage direction is positive

• Keep the light intensity at maximum

• Maintain constant distance between light source and collector

• Align the light source with the filter

Why is it important to cover the lens holder with a black cover after the experiment?

• To ensure safety

• To avoid light interference

• To prevent dust accumulation

• To maintain temperature

What should be done when changing the filter during the experiment?

• Switch off the light source

• Ensure the distance between components remains constant

• Adjust the voltage to positive

• Increase the light intensity