Physics
Which of the following parts of the sunlight makes the solar cooker hot ?

Ultra violet
Infra red
Cosmic rays
Red light

ANSWER DOWNLOAD EXAMIANS APP

Physics
An electron microscope gives higher magnification than an optical microscope, because :

The electrons have more energy than the light particles
The velocity of electron is smaller than that of visible light
The wavelength of electrons is smaller as compared to the wavelength of visible light
It uses more powerful lenses

ANSWER DOWNLOAD EXAMIANS APP