(A) Radiation
(B) Conduction
(C) Wave Motion
(D) All of the above
One of the isotopes of uranium is 238U92, the number of neutrons in this isotope is?
(A) 92
(B) 146
(C) 238
(D) 330
If X=A.B, then X is ‘1’ when?
(A) A=1, B=1
(B) A=0, B=0
(C) A=0, B=1
(D) A=1, B=0
The presence of magnetic field can be detected by?
(A) Small mass
(B) Stationary positive charge
(C) Stationary negative charge
(D) Magnetic compass
An electric current in conductor is due to the flow of?
(A) Free electrons
(B) Negative ions
(C) Positive charges
(D) Positive ions
Capacitance is defined as?
(A) VC
(B) Q/V
(C) QV
(D) V/Q
A positive electric charge?
(A) Attracts other positive charge
(B) Repels the neutral charge
(C) Attracts a neutral charge
(D) Repels other positive charge
The index of refraction depends on?
(A) Focal length
(B) Speed of light
(C) Image distance
(D) Object distance