What Is the Minimum Frequency of a Photon That Can $\varPhi$

question 28

Multiple Choice

What is the minimum frequency of a photon that can eject a photoelectron from Ba metal? (The work function of barium is $\varPhi$ = 4.3 *10^-19 J.)

• A)2.8* 10^-52 Hz
• B)6.5 *10¹⁴ Hz
• C)6.5 * 10⁴ Hz
• D)6.5*10¹³ Hz
• E)2.8 * 10¹⁴ Hz

Distinguish between different perceptual phenomena, including perceptual shifts and the Ames Room illusion.

Understand the concept of perceptual constancy and its types.

Comprehend the principles of Gestalt psychology in perception.

Recognize the mechanisms of size and shape constancy.

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