Photoelectric Effect
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PHXII11:DUAL NATURE OF RADIATION AND MATTER

357773 Assertion :
Work function of different metals is different.
Reason :
Work function is the minimum energy required by an electron to just escape from the metal surface.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but reason is correct.
PHXII11:DUAL NATURE OF RADIATION AND MATTER

357774 The electromagnetic theory of light failed to explain

1 Photoelectric effect
2 Polarisation
3 Diffraction
4 Interference
KCET - 2007
PHXII11:DUAL NATURE OF RADIATION AND MATTER

357775 A \(2\;mW\) laser operates at a wavelength of \(500\,nm\). The number of photons that will be emitted per second is [Given Planck's constant \(h = 6.6 \times {10^{ - 34}}\;Js,\) speed of light \({\left.c=3.0 \times 10^{8} {~m} / {s}\right]}\)

1 \({2 \times 10^{16}}\)
2 \({1.5 \times 10^{16}}\)
3 \({5 \times 10^{15}}\)
4 \({1 \times 10^{16}}\)
PHXII11:DUAL NATURE OF RADIATION AND MATTER

357776 In photoelectric emission, the energy of the emitted electron is

1 Larger than that of the incident photons
2 Smaller than that of the incident photons
3 Same as that of the incident photons
4 Proportional to the intensity of the incident light
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PHXII11:DUAL NATURE OF RADIATION AND MATTER

357773 Assertion :
Work function of different metals is different.
Reason :
Work function is the minimum energy required by an electron to just escape from the metal surface.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but reason is correct.
PHXII11:DUAL NATURE OF RADIATION AND MATTER

357774 The electromagnetic theory of light failed to explain

1 Photoelectric effect
2 Polarisation
3 Diffraction
4 Interference
KCET - 2007
PHXII11:DUAL NATURE OF RADIATION AND MATTER

357775 A \(2\;mW\) laser operates at a wavelength of \(500\,nm\). The number of photons that will be emitted per second is [Given Planck's constant \(h = 6.6 \times {10^{ - 34}}\;Js,\) speed of light \({\left.c=3.0 \times 10^{8} {~m} / {s}\right]}\)

1 \({2 \times 10^{16}}\)
2 \({1.5 \times 10^{16}}\)
3 \({5 \times 10^{15}}\)
4 \({1 \times 10^{16}}\)
PHXII11:DUAL NATURE OF RADIATION AND MATTER

357776 In photoelectric emission, the energy of the emitted electron is

1 Larger than that of the incident photons
2 Smaller than that of the incident photons
3 Same as that of the incident photons
4 Proportional to the intensity of the incident light
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PHXII11:DUAL NATURE OF RADIATION AND MATTER

357773 Assertion :
Work function of different metals is different.
Reason :
Work function is the minimum energy required by an electron to just escape from the metal surface.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but reason is correct.
PHXII11:DUAL NATURE OF RADIATION AND MATTER

357774 The electromagnetic theory of light failed to explain

1 Photoelectric effect
2 Polarisation
3 Diffraction
4 Interference
KCET - 2007
PHXII11:DUAL NATURE OF RADIATION AND MATTER

357775 A \(2\;mW\) laser operates at a wavelength of \(500\,nm\). The number of photons that will be emitted per second is [Given Planck's constant \(h = 6.6 \times {10^{ - 34}}\;Js,\) speed of light \({\left.c=3.0 \times 10^{8} {~m} / {s}\right]}\)

1 \({2 \times 10^{16}}\)
2 \({1.5 \times 10^{16}}\)
3 \({5 \times 10^{15}}\)
4 \({1 \times 10^{16}}\)
PHXII11:DUAL NATURE OF RADIATION AND MATTER

357776 In photoelectric emission, the energy of the emitted electron is

1 Larger than that of the incident photons
2 Smaller than that of the incident photons
3 Same as that of the incident photons
4 Proportional to the intensity of the incident light
Join With Us for More Updates
PHXII11:DUAL NATURE OF RADIATION AND MATTER

357773 Assertion :
Work function of different metals is different.
Reason :
Work function is the minimum energy required by an electron to just escape from the metal surface.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but reason is correct.
PHXII11:DUAL NATURE OF RADIATION AND MATTER

357774 The electromagnetic theory of light failed to explain

1 Photoelectric effect
2 Polarisation
3 Diffraction
4 Interference
KCET - 2007
PHXII11:DUAL NATURE OF RADIATION AND MATTER

357775 A \(2\;mW\) laser operates at a wavelength of \(500\,nm\). The number of photons that will be emitted per second is [Given Planck's constant \(h = 6.6 \times {10^{ - 34}}\;Js,\) speed of light \({\left.c=3.0 \times 10^{8} {~m} / {s}\right]}\)

1 \({2 \times 10^{16}}\)
2 \({1.5 \times 10^{16}}\)
3 \({5 \times 10^{15}}\)
4 \({1 \times 10^{16}}\)
PHXII11:DUAL NATURE OF RADIATION AND MATTER

357776 In photoelectric emission, the energy of the emitted electron is

1 Larger than that of the incident photons
2 Smaller than that of the incident photons
3 Same as that of the incident photons
4 Proportional to the intensity of the incident light
For More Updates join with Us