An electron is
An electron is Options (a) Hardon (b) Baryon (c) a nucleon (d) a lepton Correct Answer: a leptonExplanation:No explanation available.…
7 years ago
KA2007
An engine is moving towards a wall with a velocity 50 ms⁻¹ emits a note of 1.2 kHz.
An engine is moving towards a wall with a velocity 50 ms⁻¹ emits a note of 1.2 kHz. Speed of…
7 years ago
A radioactive element forms its own isotope after 3 consecutive disintegrations.
A radioactive element forms its own isotope after 3 consecutive disintegrations. The particle emiited are Options (a) 3 β-particles (b)…
7 years ago
All components of the electromagnetic spectrum in vacuum have the same
All components of the electromagnetic spectrum in vacuum have the same Options (a) Energy (b) Velocity (c) Wavelength (d) Frequency…
7 years ago
Current in a coil changes from 4 A to zero in 0.1 second and the emf induced is 100V
Current in a coil changes from 4 A to zero in 0.1 second and the emf induced is 100 V.…
7 years ago
The de-Broglie wavelength of a proton(charge = 1.6 x 10⁻¹⁹ C, Mass = 1.6 x 10⁻²⁷ kg)
The de-Broglie wavelength of a proton(charge = 1.6 x 10⁻¹⁹ C, Mass = 1.6 x 10⁻²⁷ kg) accelerated through a…
7 years ago
A carnot’s engine operates with source at 127° C and sink at 27°C
A carnot's engine operates with source at 127° C and sink at 27° C. If the source supplies 40 kJ…
7 years ago
When the angle of incidence is 60° on the surface of a glass slab, it is found
When the angle of incidence is 60° on the surface of a glass slab, it is found that the reflected…
7 years ago
The number of mitotic cell division required to produce 256 cells from single cell
The number of mitotic cell division required to produce 256 cells from single cell would be Options (a) 10 (b)…
7 years ago
A radioactive substance contains 10000 nuclei and its halflife period is 20 days
A radioactive substance contains 10000 nuclei and its halflife period is 20 days. The number of nuclei present at the…
7 years ago