(A) 2/3 Mr2
(B) 1/2 Mr2
(C) 2/5 Mr2
(D) None of these
The answer is: (C) 2/5 Mr2
The moment of inertia of a solid sphere about its diameter is (2/5)Mr2.
Category: Physics MCQs FPSC NTS PPSC Past Papers Test Questions
Physics MCQs quiz test questions with answers for FPSC CSS PPSC NTS SPSC KPPSC test preparation, including questions from physics past papers. Basic Physics MCQ of class 9, 10, 11, 12 and advanced Physics MCQs of BSc, MSc or Masters level.
What is the magnitude of the vector 12i-8j-24k?
(A) 18
(B) 28
(C) 38
(D) 48
The answer is: (B) 28
Solution
Magnitude = sqrt[(12)2+(-8)2+(-24)2]
= sqrt[144+64+576]
= sqrt[784]
= 28
If we add all the 7 colors of rainbow (red, yellow, blue, green, orange, violet and indigo), the resultant color would be?
(A) White
(B) Black
(C) Maroon
(D) Dark Blue
The answer is: (A) White
When white light passes through a prism, it splits into ________ colors.
(A) 3
(B) 5
(C) 7
(D) 9
The answer is: (C) 7
A camera uses a ________ to form an image on a piece of film at the back.
(A) convex lens
(B) concave lens
(C) diverging lens
(D) none of these
The answer is: (A) convex lens
Short-sight defect could be corrected by a
(A) convex lens
(B) concave lens
(C) converging lens
(D) none of these
The answer is: (B) concave lens
In humans, heart functions as a source of
(A) battery
(B) charge
(C) electric generator
(D) electromotive force
The answer is: (D) electromotive force
Ozone layer protects the Earth from ________ radiations from the Sun.
(A) microwaves
(B) infrared
(C) X-rays
(D) ultraviolet
The answer is: (D) ultraviolet
The distance of Moon from the Earth is ________ km.
(A) 364,000
(B) 384,000
(C) 464,000
(D) 484,000
The answer is: (B) 384,000
There are ________ planets in orbit around the Sun.
(A) 6
(B) 7
(C) 8
(D) 9
The answer is: (C) 8