Which of the following statements correctly describe(s) c...
Which of the following statements correctly describe(s) cathode rays?
i. they consist of tiny particles carrying negative electric charges.
ii. they are deflected in a magnetic field but not in an electric field.
iii. they consist of fast moving neutrons and deflected in an electric field.
i only
ii only
i and ii only
ii and iii only
Correct answer is A
No explanation has been provided for this answer.
The magnification of an object 2cm tall when placed 10cm in front of a plane mirror is ...
Which of the following factors affects the speed of sound in air? i. Temperature ii. pressure i...
According to Pascal's principle, the pressure in a fluid is always? ...
Fleming's right hand rule is also called the ...
Which of the following is an essential physical property of the wires used for making fuses? ...