Physics MCQs Part 3

physics mcqs
21. If we add all the 7 colours of rainbow (red, yellow, blue, green, orange, violet and indigo), the resultant colour would be?
A. White
B. Black
C. Maroon
D. Dark Blue

22. When white light passes through a prism, it splits into __________ colours.
A. 5
B. 6
C. 7
D. 8

23. 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. one of these

24. Short-sight defect could be corrected by a __________.
A. convex lens
B. concave lens
C. converging lens
D. none of these

25. Red + Green + Blue = ?
A. White
B. Black
C. Maroon
D. Dark Blue

26. Ozone layer protects the Earth from __________ radiations from the Sun.
A. microwaves
B. infrared
C. X-rays
D. ultraviolet

27. The distance of Moon from the Earth is __________ km.
A. 364,000
B. 384,000
C. 464,000
D. 484,000

28. There are __________ planets in orbit around the Sun.
A. 6
B. 7
C. 8
D. 9

29. 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

30. Which from the following is NOT a Renewable Energy?
A. Geothermal
B. Solar
C. Nuclear

D. Biofuels