During negative β-decay
During negative β-decay Options (a) Neutron converts into proton (b) Proton converts into neutron (c) Neutron proton ratio increases (d)…
8 years ago
Questions
In atom bomb, the reaction which occurs is
In atom bomb, the reaction which occurs is Options (a) fusion (b) controlled fission (c) uncontrolled fission (d) thermonuclear Correct…
8 years ago
1 curie is equal to
1 curie is equal to Options (a) 3x10¹⁰ disintegrations/sec (b) 3.7x10⁷ disintegrations/sec (c) 5x10⁷ disintegrations/sec (d) 3.7x10¹⁰ disintegrations/sec Correct Answer:…
8 years ago
A nucleus ᵐₙ X emits one α- particle and two β- particles. The resulting nucleus is
A nucleus ᵐₙ X emits one α- particle and two β- particles. The resulting nucleus is Options (a) ᵐ⁻⁶ₙ₋₄ Z…
8 years ago
Magnetism of a magnet is due to
Magnetism of a magnet is due to Options (a) Cosmic rays (b) Large magnet at the centre of Earth (c)…
8 years ago
Nickel shows ferromagnetic property at room temperature. If the temperature is
Nickel shows ferromagnetic property at room temperature. If the temperature is increased beyond Curie temperature, then it will show Options…
8 years ago
Two particles A and B having equal charges, after being accelerated
Two particles A and B having equal charges, after being accelerated through the same potential difference enter into a region…
8 years ago
If the magnetising field on a ferromagnetic material is increased, its permeability
If the magnetising field on a ferromagnetic material is increased, its permeability Options (a) decrease (b) increase (c) is unaffected…
8 years ago
The dimensions of magnetic field intensity B are
The dimensions of magnetic field intensity B are Options (a) MLT⁻²A⁻¹ (b) MT⁻²A⁻¹ (c) ML²TA⁻² (d) M²LT⁻²A⁻¹ Correct Answer: MT⁻²A⁻¹…
8 years ago
Core of electromagnets are made of ferromagnetic material which has
Core of electromagnets are made of ferromagnetic material which has Options (a) low permeability and high retentivity (b) high permeability…
8 years ago