Arrange the `alpha,beta and gamma`-rays in the order indicated-(i) increasing extent of deflection by a magnetic field (ii) decreasing power of ionise gases.

Arrange alpha , beta and gamma -rays, ascending order of their penetrating power.

Arrange alpha,beta,gamma rays in the decreasing order of their masses :

Compare alpha,beta & gamma ray in respect of charge, ionisation power and penetratin property.

Compare the following properties alpha,beta and gamma -ray? Penetrating power

Compare the following properties alpha,beta and gamma -ray? effect of electric and magnetic field

Arrange the following radiations in the order of their increasing frequencies- (i) the amber light of traffic signals, (ii) FM radio waves, (iii) X-rays & (iv) Cosmic rays.

Arrange the elements according to the instruction given: (i) Na,Cu,Zn (increasing order of electropositivity). (ii) Na, Cs, K, Rb Li (increasing order of atomic volume).

The french physicist Louis de Broglie in 1924 postulated that matter like radiation show a dual behaviour . He proposed the following relationship between the wavelength lambda of a material particle its linear momentum p and planck constant h lamda=h/p =h/(mv) The de broglie relation implies that the wavelength of a particle should decreases as its velocity increases . it also implies that for a given velocity heavier particles should have shorter wavelength than lighter particles. The waves associated with particles in motion are called matter waves or de broglie waves. These waves differ from the electromagnetic waves as they (i) have lower velocities (ii) have no electrical and magnetic fields and (iii) are not emitted by the particle under consideration . The experimental confirmation of the de-broglie relation was obtained when Davisson ans Germer in 1927 observed that a beam of electrons is diffracted by a nickel crystal . as diffraction a characteristics property of waves hence the beam of electron behaves as a wave, as proposed by de-broglie. If proton, electron and alpha -particle are moving with same kinetic energy then the order of de-Broglie's wavelength

The french physicist Louis de Broglie in 1924 postulated that matter like radiation show a dual behaviour . He proposed the following relationship between the wavelength lamda of a material particle its linear momentum p and planck constant h lamda=h/p =h/(mv) The de broglie relation implies that the wavelength of a particle should decreases as its velocity increases . it also implies that for a given velocity heavier particles should have shorter wavelength than lighter particles. The waves associated with particles in motion are called matter waves or de broglie waves. These waves differ from the electromagnetic waves as they (i) have lower velocities (ii) have no electrical and magnetic fields and (iii) are not emitted by the particle under consideration . The experimental confirmation of the de-broglie relation was obtained when Davisson ans Germer in 1927 observed that a beam of electrons is diffracted by a nickel crystal . as diffraction a characteristics property of waves hence the beam of electron behaves as a wave, as proposed by de-broglie. de- Broglie wavelength of an electron travelling with speed equal to 1% of the speed of light

When alpha -rays and beta -rays are compared as radioactive radiation, it is found that - (A) Deflection of beta -particles in electric or magnetic field is comparatively larger. (B) Penetration power of beta -particles is more. (C) Ionisation power of beta -particles is more. (D) Velocity of beta -particles is more.