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Thermionic Emission and Radioactivity Physics - Thermionic Emission and Radioactivity

ICSE - STD 10 - Physics (ICSE - English Medium). 142 questions in this chapter.

Question types

Thermionic Emission and Radioactivity question types

142 questions across 4 question groups — pick any mix to generate a Physics paper with step-by-step answer keys.

142
Questions
4
Question groups
5
Question types
Sample Questions

Thermionic Emission and Radioactivity questions

One sample from each question group in this chapter. Select any group above to see the full set with answer keys.

Q 16[5 Mark Question Answer]5 Marks
Complete the following fission reaction:
$
{ }_{92} U ^{235}{ }_0 n ^1 \longrightarrow{ }_a Sb ^{133}+{ }_{41} Co ^b+4{ }_0 n _1+\text { energy }
$
Write down the values of $a$ and $b$.
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Q 17[5 Mark Question Answer]5 Marks
An element P disintegrates by beta-emission and the new element suffers two further disintegration, both by beta-emission, to form an element Q. Show that P and Q are isotopes.
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Q 19[5 Mark Question Answer]5 Marks
An imaginary radioactive element ${ }_{92} X^{235}$ decays to form $X_1 ; X_2 ; X_3 ; X_4 ; X_5$ and $X_6$ nuclides, by ejecting two $\beta$-particles, followed by $\alpha$-particles and again two $\beta$-particles, followed by $\alpha$-particle. Represent the various nuclear changes in the form of an equation. State the mass number and atomic number of $X_6$. List the isotopes and isobars in the above nuclear equation.
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