Q. Which waves are commonly produced by oscillating electric circuits?
(A) Microwaves
(B) Radio waves
(C) Infrared rays
(D) X-Rays
The answer is: (A) Microwaves ☑
Q. Which from the following has the shortest wavelengths?
(A) Light
(B) X-Rays
(C) Infrared rays
(D) Gamma rays
The answer is: (D) Gamma rays ☑
Q. Looking at the mirror, you notice that your image appears enlarged. What type of mirror is this?
(A) Plane
(B) Concave
(C) Convex
(D) (A) or (C)
The answer is: (B) Concave ☑
Q. Looking at the mirror, you notice that your image appears shorter. What type of mirror is this?
(A) Plane
(B) Concave
(C) Convex
(D) (A) or (B)
The answer is: (C) Convex ☑
Q. The SI unit of current is
(A) ampere
(B) volt
(C) ohm
(D) Coulomb
The answer is: (A) ampere ☑