Gold foil experiment was done by
Thomson
Rutherford
Lenard
Bohr
Atoms of the same element having same atomic number but different mass number are called
isobars
isotones
isomers
isotopes
1 MeV equals
1.6x10-13 J
1.6x10-23 J
2.42x1045 J
3.2x10-23 J
1 amu is equal to
9.8 MeV
931.5 Mev
9.31 Mev
93.1 MeV
When aluminium is bombarded by an α-particle,
radio phosphorous is formed
radio aluminium is formed
radio sulphur is formed
radio carbon is formed
An elementary particle with a positive charge equal in magnitude to the electrons
neutron
protone
positron
neutrino
The age of ancient biological material is determined by using
Ionizing power
Radio Carbon-dating
Radio activity
Radio therapy
If an α-particle is emitted, the atomic number of original nucleus
doubled by 2
reduced by 2
no change
halved
Which among the following is true ?
A=Z+N
A=2Z
A=Z+2N
A= (Z+N)2
Neutral radiations are
α – Rays
β- Rays
γ-Rays
X– Rays