Photoelectric Effect
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PHXII11:DUAL NATURE OF RADIATION AND MATTER

357623 Assertion :
When ultraviolet light is incident on a photocell, its stopping potential is \(V_{0}\) and the maximum kinetic energy of the photoelectrons is \(E_{k \text { max }}\). When the ultraviolet light is replaced by \(X\)-rays, both \(V_{0}\) and \(E_{k \text { max }}\) increase.
Reason :
Photoelectrons are emitted with fixed kinetic energy which is equal to \(h v-W\).

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

357624 If the distance of \(100\;W\) lamp is increased from a photocell, the saturation current \(i\) in the photocell varies with the distance \(d\) as

1 \(i \propto d^{2}\)
2 \(i \propto d\)
3 \(i \propto \dfrac{1}{d}\)
4 \(i \propto \dfrac{1}{d^{2}}\)
PHXII11:DUAL NATURE OF RADIATION AND MATTER

357625 The value of stopping potential in the following diagram
supporting img

1 \( - 8\;V\)
2 \( - 6\;V\)
3 \( - 4\;V\)
4 \( - 2\;V\)
PHXII11:DUAL NATURE OF RADIATION AND MATTER

357626 Light of certain frequency and intensity incident on a photosensitive material causes photoelectric effect. If both the frequency and intensity are doubled, the photoelectric saturation current becomes

1 Halved
2 Quadrupled
3 Unchanged
4 Doubled
KCET - 2019
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PHXII11:DUAL NATURE OF RADIATION AND MATTER

357623 Assertion :
When ultraviolet light is incident on a photocell, its stopping potential is \(V_{0}\) and the maximum kinetic energy of the photoelectrons is \(E_{k \text { max }}\). When the ultraviolet light is replaced by \(X\)-rays, both \(V_{0}\) and \(E_{k \text { max }}\) increase.
Reason :
Photoelectrons are emitted with fixed kinetic energy which is equal to \(h v-W\).

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

357624 If the distance of \(100\;W\) lamp is increased from a photocell, the saturation current \(i\) in the photocell varies with the distance \(d\) as

1 \(i \propto d^{2}\)
2 \(i \propto d\)
3 \(i \propto \dfrac{1}{d}\)
4 \(i \propto \dfrac{1}{d^{2}}\)
PHXII11:DUAL NATURE OF RADIATION AND MATTER

357625 The value of stopping potential in the following diagram
supporting img

1 \( - 8\;V\)
2 \( - 6\;V\)
3 \( - 4\;V\)
4 \( - 2\;V\)
PHXII11:DUAL NATURE OF RADIATION AND MATTER

357626 Light of certain frequency and intensity incident on a photosensitive material causes photoelectric effect. If both the frequency and intensity are doubled, the photoelectric saturation current becomes

1 Halved
2 Quadrupled
3 Unchanged
4 Doubled
KCET - 2019
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PHXII11:DUAL NATURE OF RADIATION AND MATTER

357623 Assertion :
When ultraviolet light is incident on a photocell, its stopping potential is \(V_{0}\) and the maximum kinetic energy of the photoelectrons is \(E_{k \text { max }}\). When the ultraviolet light is replaced by \(X\)-rays, both \(V_{0}\) and \(E_{k \text { max }}\) increase.
Reason :
Photoelectrons are emitted with fixed kinetic energy which is equal to \(h v-W\).

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

357624 If the distance of \(100\;W\) lamp is increased from a photocell, the saturation current \(i\) in the photocell varies with the distance \(d\) as

1 \(i \propto d^{2}\)
2 \(i \propto d\)
3 \(i \propto \dfrac{1}{d}\)
4 \(i \propto \dfrac{1}{d^{2}}\)
PHXII11:DUAL NATURE OF RADIATION AND MATTER

357625 The value of stopping potential in the following diagram
supporting img

1 \( - 8\;V\)
2 \( - 6\;V\)
3 \( - 4\;V\)
4 \( - 2\;V\)
PHXII11:DUAL NATURE OF RADIATION AND MATTER

357626 Light of certain frequency and intensity incident on a photosensitive material causes photoelectric effect. If both the frequency and intensity are doubled, the photoelectric saturation current becomes

1 Halved
2 Quadrupled
3 Unchanged
4 Doubled
KCET - 2019
Join With Us for More Updates
PHXII11:DUAL NATURE OF RADIATION AND MATTER

357623 Assertion :
When ultraviolet light is incident on a photocell, its stopping potential is \(V_{0}\) and the maximum kinetic energy of the photoelectrons is \(E_{k \text { max }}\). When the ultraviolet light is replaced by \(X\)-rays, both \(V_{0}\) and \(E_{k \text { max }}\) increase.
Reason :
Photoelectrons are emitted with fixed kinetic energy which is equal to \(h v-W\).

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

357624 If the distance of \(100\;W\) lamp is increased from a photocell, the saturation current \(i\) in the photocell varies with the distance \(d\) as

1 \(i \propto d^{2}\)
2 \(i \propto d\)
3 \(i \propto \dfrac{1}{d}\)
4 \(i \propto \dfrac{1}{d^{2}}\)
PHXII11:DUAL NATURE OF RADIATION AND MATTER

357625 The value of stopping potential in the following diagram
supporting img

1 \( - 8\;V\)
2 \( - 6\;V\)
3 \( - 4\;V\)
4 \( - 2\;V\)
PHXII11:DUAL NATURE OF RADIATION AND MATTER

357626 Light of certain frequency and intensity incident on a photosensitive material causes photoelectric effect. If both the frequency and intensity are doubled, the photoelectric saturation current becomes

1 Halved
2 Quadrupled
3 Unchanged
4 Doubled
KCET - 2019
For More Updates join with Us