Q. Which from the following radiations is high-energy and high-speed particles?
(A) Alpha rays
(B) Beta rays
(C) Gamma rays
(D) None of these
The answer is: (B) Beta rays ☑
Q. The property that determines how much charge a capacitor can store is called
(A) capacitance
(B) resistance
(C) electric charge
(D) dipole moment
The answer is: (A) capacitance ☑
Q. A capacitor is said to be charged if its plates carry equal and _____ charges.
(A) negative
(B) neutral
(C) opposite
(D) same
The answer is: (C) opposite ☑
Q. 1 horsepower = _____ watt
(A) 145.7
(B) 345.7
(C) 545.7
(D) 745.7
The answer is: (D) 745.7 ☑
Q. What type of mirror is used for surveillance in shopping centers?
(A) Plane
(B) Concave
(C) Convex
(D) (B) or (C)
The answer is: (C) Convex ☑