EASY
12th ICSE
IMPORTANT
Earn 100

An electric field can deflect:

50% studentsanswered this correctly

Important Questions on Radioactivity

EASY
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:
EASY
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?
EASY
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:

MEDIUM
12th ICSE
IMPORTANT
ISC Physics Class 12, Part-2>Chapter 15 - Radioactivity>QUESTIONS>Q 10

A radioactive substance decays to (1/16)th of its initial mass in 40 days. The half-life of the substance, in days, is:

EASY
12th ICSE
IMPORTANT
ISC Physics Class 12, Part-2>Chapter 15 - Radioactivity>QUESTIONS>Q 11
In a gamma ray emission from nucleus:
EASY
12th ICSE
IMPORTANT
ISC Physics Class 12, Part-2>Chapter 15 - Radioactivity>QUESTIONS>Q 1
Who discovered radium?
EASY
12th ICSE
IMPORTANT
ISC Physics Class 12, Part-2>Chapter 15 - Radioactivity>QUESTIONS>Q 2

Which part of the atom does emit radioactive radiation?

EASY
12th ICSE
IMPORTANT
ISC Physics Class 12, Part-2>Chapter 15 - Radioactivity>QUESTIONS>Q 3

The radioactive decay of a material can neither be accelerated nor slowed by any physical or chemical means. Why?