EASY
10th ICSE
IMPORTANT
Earn 100

Why Radium paint, consisting of zinc sulphide and a trace of Radium salt glows in the dark ?

Important Questions on Modern Physics

EASY
10th ICSE
IMPORTANT
Self Study in Physics>Chapter 12 - Modern Physics>TEST YOURSELF>Q 10
A radioactive element XAZ  first emits two β particles and then an alpha particle and the resulting nucleus can be represented by YPQ . What are the values of P and Q in terms of A and Z?
EASY
10th ICSE
IMPORTANT
Self Study in Physics>Chapter 12 - Modern Physics>TEST YOURSELF>Q 10
What are radioisotopes? Describe briefly four uses of these isotopes.
EASY
10th ICSE
IMPORTANT
Self Study in Physics>Chapter 12 - Modern Physics>TEST YOURSELF>Q 11

What are fission and fusion processes? Write their equations.

EASY
10th ICSE
IMPORTANT
Self Study in Physics>Chapter 12 - Modern Physics>TEST YOURSELF>Q 11
When does the nucleus of an atom become radioactive?
EASY
10th ICSE
IMPORTANT
Self Study in Physics>Chapter 12 - Modern Physics>TEST YOURSELF>Q 11
How is the radioactivity of an element affected when it undergoes a chemical change to form a chemical compound?
EASY
10th ICSE
IMPORTANT
Self Study in Physics>Chapter 12 - Modern Physics>TEST YOURSELF>Q 11
Name the product of nuclear fission which is utilised to bring about further fission of U92235.
EASY
10th ICSE
IMPORTANT
Self Study in Physics>Chapter 12 - Modern Physics>TEST YOURSELF>Q 12
Why are alpha rays not used in radiotherapy?
EASY
10th ICSE
IMPORTANT
Self Study in Physics>Chapter 12 - Modern Physics>TEST YOURSELF>Q 13
Which rays cause maximum damage to living beings α,β or γ?