A body is thrown with a velocity of 9.8 m/s making angle of 30° with the horizontal
A body is thrown with a velocity of 9.8 m/s making angle of 30° with the horizontal. It will hit…
8 years ago
Questions
The angular speed of earth, so that the object on equator may appear weightless
The angular speed of earth, so that the object on equator may appear weightless is(g = 10 m/s², radius of…
8 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.…
8 years ago
An object of mass 3kg is at rest. Now a force F=6t² i⃗+4t j⃗ is applied on the object
An object of mass 3kg is at rest. Now a force F=6t² i⃗+4t j⃗ is applied on the object. Then…
8 years ago
If the red light is replaced by blue light illuminating the object in a microscope
If the red light is replaced by blue light illuminating the object in a microscope, the resolving power of the…
8 years ago
A boat of anchor is rocked by waves whose crests are 100 m apart and velocity
A boat of anchor is rocked by waves whose crests are 100 m apart and velocity is 25 m/s. The…
8 years ago
When the length of the vibrating segment of a sonometer wire is increased by
When the length of the vibrating segment of a sonometer wire is increased by 1%, the percentage change in its…
8 years ago
Sodium and copper have work function 2.3 eV and 4.5 eV respectively
Sodium and copper have work function 2.3 eV and 4.5 eV respectively. The ratio of their threshold wavelengths is nearest…
8 years ago
The velocity of sound is V, in air. If the density of air is increased to four times
The velocity of sound is V, in air. If the density of air is increased to four times, then the…
8 years ago
Light from the constellation Virgo is observed to increase in wavelength by 0.4%
Light from the constellation Virgo is observed to increase in wavelength by 0.4%. With respect to earth the constellation is…
8 years ago