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12th ICSE
IMPORTANT
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Radioactive substances do not emit:

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Important Questions on Radioactivity

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12th ICSE
IMPORTANT
ISC Physics Class 12, Part-2>Chapter 15 - Radioactivity>QUESTIONS>Q 2
In the four statements given below the only one that is correct:
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12th ICSE
IMPORTANT
ISC Physics Class 12, Part-2>Chapter 15 - Radioactivity>QUESTIONS>Q 3
β- rays emitted by a radioactive material are:
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12th ICSE
IMPORTANT
ISC Physics Class 12, Part-2>Chapter 15 - Radioactivity>QUESTIONS>Q 4
The nature of light waves is similar to:
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12th ICSE
IMPORTANT
ISC Physics Class 12, Part-2>Chapter 15 - Radioactivity>QUESTIONS>Q 5
Which of the following is a correct statement?
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12th ICSE
IMPORTANT
ISC Physics Class 12, Part-2>Chapter 15 - Radioactivity>QUESTIONS>Q 6
An electric field can deflect:
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12th ICSE
IMPORTANT
ISC Physics Class 12, Part-2>Chapter 15 - Radioactivity>QUESTIONS>Q 7
Consider α-particles, β-particles and γ-rays, each having an energy of 0.5 MeV. In the increasing order of penetrating powers, the radiations are:
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12th ICSE
IMPORTANT
ISC Physics Class 12, Part-2>Chapter 15 - Radioactivity>QUESTIONS>Q 8
Which of the following can pass through 20 cm thickness of steel?
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12th ICSE
IMPORTANT
ISC Physics Class 12, Part-2>Chapter 15 - Radioactivity>QUESTIONS>Q 9

The half-life of a radioactive substance is 10 days. It means that: