(A) conduction
(B) condensation
(C) convection
(D) evaporation
The answer is: (B) condensation
Tag: optics mcqs
Which from the following is NOT a Renewable Energy?
(A) Geothermal
(B) Solar
(C) Nuclear
(D) Bio-fuels
The answer is: (C) Nuclear
Planets are kept in orbit by the?
(A) Attraction among the Planets
(B) Attraction among the Planets and the Sun
(C) Radiations from the Sun
(D) Gravitational pull of the Sun
The answer is: (D) Gravitational pull of the Sun
There are ________ planets in orbit around the Sun.
(A) 6
(B) 7
(C) 8
(D) 9
The answer is: (C) 8
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
Ozone layer protects the Earth from ________ radiations from the Sun.
(A) microwaves
(B) infrared
(C) X-rays
(D) ultraviolet
The answer is: (D) ultraviolet
In humans, heart functions as a source of
(A) battery
(B) charge
(C) electric generator
(D) electromotive force
The answer is: (D) electromotive force
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
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
When white light passes through a prism, it splits into ________ colors.
(A) 3
(B) 5
(C) 7
(D) 9
The answer is: (C) 7