General Science Quiz-12 for SSC CHSL 2016-17

Q1. According to the theory of relativity, which of the following always remains constant? 
(a) Length of an object
(b) Time
(c) Space
(d) Velocity of light

Q2. A colour blind person cannot 
(a) see distant objects
(b) see black colour
(c) distinguished between certain colours
(d) have persistence of vision

Q3. A mirage occurs because of 
(a) reflection by hot ground
(b) total internal reflection by layers of air
(c) interference of light
(d) diffraction of light

Q4. A rear-view mirror for driving is 
(a) plain
(b) concave
(c) convex
(d) inverted

Q5. A periscope works on the principal of 
(a) refraction
(b) total internal reflection
(c) diffraction
(d) reflection

Q6. Which one of the following lenses should be used to correct the defect of astigmatism? 
(a) Cylindrical lens
(b) Concave lens
(c) Convex lens
(d) Bifocal lens

Q7. In a laser (say neon laser) all the atoms emit the light waves of 
(a) same frequency
(b) same amplitude
(c) same phase
(d) All of the above

Q8. Which colour is the complementary colour of yellow? 
(a) Blue
(b) Green
(c) Orange
(d) Red

Q9. ‘Short-sight’ in human eye can be corrected by using proper
(a) convex lens
(b) concave lens
(c) cylindrical lens
(d) bifocal lens

Q10. Which of the following is used to split white light into different colours?
(a) Glass slab
(b) Convex lens
(c) Concave lens
(d) Prism

 Q11. Hypermetropia or longsight can be corrected by using 
(a) Bifocal lenses
(b) cylindrical lenses
(c) concave lenses
(d) convex lenses

Q12. In mirrors, the back surface is coated with a thin layer of 
(a) mercury
(b) silver
(c) red oxide
(d) sliver nitrate

Q13. Which colour of light shows maximum deviation when passed through a prism? 
(a) Red
(b) Green
(c) Violet
(d) Yellow

Q14. Red light is used for signals because it has 
(a) long wavelength
(b) high intensity
(c) high frequency
(d) low refraction in the medium

Q15. The sharpness of television image is termed as its 
(a) clarity
(b) colour
(c) resolution
(d) graphics

ANSWERS :

S1. Ans.(d)
Sol.

S2. Ans.(c)
Sol.

S3. Ans.(b)
Sol.

S4. Ans.(c)
Sol.

S5. Ans.(b)
Sol.

S6. Ans.(a)
Sol.

S7. Ans.(d)
Sol.

S8. Ans.(a)
Sol.

S9. Ans.(b)
Sol.

S10. Ans.(d)
Sol.

S11. Ans.(d)
Sol.

S12. Ans.(b)
Sol.

S13. Ans.(c)
Sol.

S14. Ans.(a)
Sol.

S15. Ans.(c)
Sol.

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