According to coulomb’s law, what happens to the attraction of two oppositely charged objects as their distance of separation increases:
Increases
Decreases
Remains unchanged
Cannot be determined
The minimum value of angle of deviation is called:
Minimum angle
Incident angle
Angle of minimum deviation
None of these
The standard group of bits in digital electronic is:
5 bits
6 bits
7 bits
8 bits
Totally reflecting prism is used in:
Periscope
Binoculars
Periscope and binocular
Telescope
The ray of light after reflection from concave mirror passes through:
Centre
Principal focus
Pole
Radius
