Question
Which machinery can be used for all purpose like sowing,
field preparation, weeding etc.Solution
Rotavator is tractor driven rotary tillage machine. It is economical and effective against cultivator, leveller and disc harrow. Rotavator is used for breaking up the soil, land leveling, field preparation, weeding, etc.
A person throws a ball from ground level at speed u and angle θ. The ball reaches maximum height H and range R. What is the ratio H/R?
A 4 cm wire carrying a current of 15 A is placed inside a solenoid perpendicular to its axis. The magnetic field inside the solenoid is given to be 0.27...
In a plane electromagnetic wave. the electric field oscillates sinusoid ally at a frequency of 3 Ă— 108 Hz and amplitude 36 V/m. Find the am...
A machine does 600 J of work in 2 minutes. Find its power. Â
Where is the magnetic force of a bar magnet the strongest?
A beam of light consisting of two wavelengths, 600 nm and 420 nm, is used to obtain interference fringes in a Young’s double-slit experiment. Find...
A capacitor filled with dielectric constant K is connected to a battery. If dielectric is removed, how much charge flows back?
In an atom, which particles are responsible for chemical bonding? Â
What does the slope of a velocity-time graph represent?
How long does an image remain on the retina after the object is removed?
