×
Detail Form
We will send your result on your email id and phone no. please fill detail
1.
Which of the following radiations has the least wavelength
2.
Rutherford's 
-particle experiment showed that the atoms have
-particle experiment showed that the atoms have
3.
A
nucleus at rest is decayed by emitting alpha particle into
. The speeds of the alpha particle and the thorium nucleus are in the ratio.
nucleus at rest is decayed by emitting alpha particle into. The speeds of the alpha particle and the thorium nucleus are in the ratio.
4.
Whenever a hydrogen atom emits a photon in the Balmer series
5.
The end product of the decay of 
. The number of 
-particles emitted are respectively
. The number of -particles emitted are respectively
6.
A nucleus disintegrates into two nuclear parts which have their velocities in the ratio 2:1. The ratio of their nuclear sizes will be
7.
The ratio of the energies of the hydrogen atom in its first to second excited state is
8.
Radio carbon dating is done by estimating in specimen the
9.
A heavy nucleus at rest breaks into two fragments which fly off with velocities in the ratio 8:1. The ratio of radii of the fragments is
10.
sample of a radioactive element is taken from Bombay to Delhi in 
and it was found that 
of the element remained (undisintegrated). Half life of the element is
sample of a radioactive element is taken from Bombay to Delhi in and it was found that of the element remained (undisintegrated). Half life of the element is