Correct option is C
We know that photo current directly proportional to intensity of the incident light. But intensity is inversely proportional to the square of the distance.
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Question
A point source causing photoelectric emission from a metallic plate is moved away from the plate. The variation of photoelectric current with distance from the source is correctly represented by the graph _____________.
Fill in the blank with the correct answer from the options given below.
A.
B.
C.
D.
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CUET 2025 English Language Mock 01
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50 Questions
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EnglishSimilar Questions
- 1)Radiation of frequency 2
is incident on a metal with threshold frequency
. The correct statement of the following is ____________.
Fill in the blank with the correct answer from the options given below. - 2)A point source causing photoelectric emission from a metallic plate is moved away from the plate. The variation of photoelectric current with distance from the source is correctly represented by the graph _____________.
Fill in the blank with the correct answer from the options given below. - 3)A proton accelerated through a potential difference V has a de Broglie wavelength λ. On doubling the accelerating potential, de Broglie wavelength of the proton ________________.
Fill in the blank with the correct answer from the options given below. - 4)The transfer of integral number of __________ is one of the evidence of quantization of electric charge.
Fill the blank with the correct answer from the options given below. - 5)
The de Broglie wavelength of an electron moving with kinetic energy of 140eV is nearly
- 6)The graph which shows the variation of
and its kinetic energy, E is (where λ is de Broglie wavelength of a free particle):
- 7)If c is the velocity of light in free space, the correct statements about photon among the following are:
Choose the correct answer from the options given below - 8)Match List I with List II.
Choose the correct answer from the options given below. - 9)The work functions of Caesium (Cs), Potassium (K) and Sodium (Na) are ( b)14 eV, ( b)30 eV and ( b)75 eV respectively. If incident electromagnetic radiation has an incident energy of ( b)20 eV, which of these photosensitive surfaces may emit photoelectrons?
- 10)The graph which shows the variation of the de Broglie wavelength (λ) of a particle and its associated momentum (p) is
