Important Science Questions For SSC CGL 2017 set-2

Dear SSC Aspirants, Practice  science quiz for railway,ssc exams based on latest exam pattern and ssc previous years questions

1.By which optical phenomenon, the splitting of white light into seven constituent colours occur?
A.Refraction
B.Reflection
C.Dispersion
D.Interference

2.A human eye can focus on objects at different distances by adjusting the focal length of the eye lens. This phenomenon is due to:
A.near sightedness
B.long sightedness
C.accommodation
D.persistence of vision

3.Which of the following are the primary colours?
A.Red, Blue, Yellow
B.Red, Green, Violet.
C.Yellow, Green Blue
D.Red, Green, Blue

4.The human eye forms the image of an object at its
A.cornea
B.iris
C.pupil
D.retina

5.The least distance of distinct vision for a young adult with normal vision is about
A.25 m
B.2.5 cm
C.25 cm
D.2.5 m

6.Which of the following optical phenomenon is used in cinematography or movie projectors?
A.accommodation
B.persistence of vision
C.interference
D.short sightedness

7.Which phenomenon is responsible for the twinkling of stars?
A.Atmosphere reflection
B.Atmosphere refraction
C.Reflection
D.Total internal reflection

8.The change in focal length of an eye lens is caused by the action of the
A.pupil
B.retina
C.ciliary muscles
D.iris

9.What is the time difference between actual sunset and apparent sunset?
A.2 s
B.20 s
C.2 minute
D.20 minute

10.When light passes through a prism, the colour which deviates the least is:
A.red
B.blue
C.violet
D.green

Answers:
1.C
2.C
3.A (A is correct for Painting perspective and option D is correct for Computer Graphics )
4.D
5.C
6:B
7.B
8.C
9.C
10.A