Q. Human eye can view electromagnetic radiation with wavelengths from _____ to _____ nano-meter.
(A) 200, 500
(B) 200, 600
(C) 400, 700
(D) 400, 800
The answer is: (C) 400, 700 ☑
Q. An object of mass 8 kg on the Earth will have a mass of _____ kg on the Moon.
(A) 2
(B) 4
(C) 8
(D) 16
The answer is: (C) 8 (mass remains same everywhere) ☑
Q. Suppose the force of gravity on the Earth is 10 m/s2 and on the Moon it is 2 m/s2. If the weight of an object on the Earth is 200 N. What will be its weight on the Moon?
(A) 40 N
(B) 80 N
(C) 120 N
(D) 160 N
The answer is: (A) 40 N ☑
Q. Red + Green + Blue = ?
(A) Black
(B) White
(C) Maroon
(D) Dark Blue
The answer is: (B) White ☑
Q. The SI unit of electricity is
(A) ampere
(B) volt
(C) joule
(D) Coulomb
The answer is: (D) Coulomb ☑