Which among the following keyboard shortcuts is used to

The density of water is maximum at which temperature?

Which of the following is an alpha particle which is emitted in radioactivity?

The mass and energy equivalent to 1 a.m.u. respectively are -

The electric and magnetic fields of an electromagnetic wave are _____________

An electric bulb is rated 100 W and 220 V. What is the current through the bulb?  

What is the density of an object with mass 500 g and volume 250 cm³?  

A current element is placed at origin. At point P(1 mm,1 mm), the magnetic field due to this element is:

Angle of friction and angle of repose are

Which of the following statement is true for a wavelength of 1000 nm. A p-n photodiode is fabricated from a semiconductor with band gap of 1.9 eV.