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PhysicsMediumMCQ2023 · 24 Jan Shift 1

Q18.Consider the following radioactive decay process: 𝛼 𝛽- 𝛾 𝛼 𝛽+ 𝛾 218𝐴84 ⟶𝐴1 ⟶𝐴2 ⟶𝐴3 ⟶𝐴4 ⟶𝐴5 ⟶𝐴6 The mass number and the atomic number of A6 are given by: (1) 210 and 82 (2) 210 and 84 (3) 210 and 80 (4) 211 and 80

What This Question Tests

This question evaluates the understanding of key observations and theoretical explanations related to the photoelectric effect.

Concepts Tested

Stopping potentialSaturation currentKinetic energy of photoelectronsWave theory vs particle theory of light

Formulas Used

KE_max = hf - φ

eV_s = KE_max

📚 NCERT Sections This Tests

13.2 — Obtain The Binding Energy Of The Nuclei 5626Fe And 20983 Bi In Units Of

Physics Class 12 · Chapter 13

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13.2 Obtain the binding energy of the nuclei 5626Fe and 20983 Bi in units of MeV from the following data: m ( 5626Fe ) = 55.934939 u m ( 20983 Bi ) = 208.980388 u

13.5 — The Q Value Of A Nuclear Reaction A + B ® C + D Is Defined By

Physics Class 12 · Chapter 13

77% match

13.5 The Q value of a nuclear reaction A + b ® C + d is defined by Q = [ mA + mb – mC – md]c2 where the masses refer to the respective nuclei. Determine from the given data the Q-value of the following reactions and state whether the reactions are exothermic or endothermic. (i) 11 H+13 H →12 H+12 H (ii) 126 C+126 C →1020 Ne+ 24 He Atomic masses are given to be m ( 12 H ) = 2.014102 u m ( 13 H) = 3.016049 u m ( 126 C ) = 12.000000 u m ( 1020 Ne ) = 19.992439 u

11.3 — The Photoelectric Cut-Off Voltage In A Certain Experiment Is 1.5 V.

Physics Class 12 · Chapter 11

77% match

11.3 The photoelectric cut-off voltage in a certain experiment is 1.5 V. What is the maximum kinetic energy of photoelectrons emitted?

📋 Question Details

Chapter: Dual Nature of Matter
Topic: Photoelectric Effect
Year: 2023
Shift: 24 Jan Shift 1
Q Number: Q18
Type: MCQ
NCERT Ref: Class 12 Physics Ch 11: Dual Nature of Radiation and Matter

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