Q. In metals, the charge carriers are
(A) electrons
(B) protons
(C) neutrons
(D) none of these
The answer is: (A) electrons ☑
Q. A device that accelerates beams of charged particles is known as
(A) Capacitor
(B) Resistor
(C) Cyclatron
(D) Synchrotron
The answer is: (C) Cyclatron ☑
Q. The branch of Physics that deals with behaviour and properties of light is called
(A) Electrostatics
(B) kinematics
(C) Mechanics
(D) Optics
The answer is: (D) Optics ☑
Q. Which from the following is/are NOT electromagnetic radiation(s)?
I. Alpha rays
II. Beta rays
III. Gamma rays
(A) I only
(B) II only
(C) III only
(D) I and II
The answer is: (D) I and II ☑
Q. Which from the following electromagnetic radiation is associated with heat transfer through radiation?
(A) Microwaves
(B) Infrared rays
(C) X-Rays
(D) Gamma rays
The answer is: (B) Infrared rays ☑