Yes I have modal paper of Wonders of light part 2, which part of SSC exam (Class 10) of Maharashtra Board , I am sharing with you on your demand :


Q.I (A) Choose the correct alternatives and rewrite the complete sentences :

*1. The phenomenon of splitting of light into its component colours is

..................... .

(a) reflection (b) refraction

(c) dispersion (d) rectilinear propagation

*2. Very fine particles mainly scatter ..................... light.

(a) red (b) green

(c) blue (d) yellow

*3. The phenomenon of change in the ..................... of light when it passes

from one transparent medium to another is refraction.

(a) Wavelength (b) frequency

(c) direction (d) amplitude

*4. The refractive index depends upon the ..................... of propagation of

light in different media.

(a) relative speed (b) density of medium

(c) amplitude (d) frequency

5. The ratio

sin i

sin r = constant is called as ..................... .

(a) dispersion (b) spectrum

(c) refractive index (d) proportionality constant

6. The apparent random wavering of hot air above the heated roads causes a

phenomenon called as ..................... .

(a) looming (b) mirage

(c) spectrum (d) dispersion



6. The apparent random wavering of hot air above the heated roads causes a

phenomenon called as ..................... .

(a) looming (b) mirage

(c) spectrum (d) dispersion

7. The refractive index of water is ..................... .

(a) 1.33 (b) 1.31

(c) 1.36 (d) 1

8. The refractive index of ..................... is the highest.

(a) alcohol (b) flint glass

(c) diamond (d) canada balsam

9. When a ray of light travels from an optically denser medium to an optically

rarer medium, the ray bends ..................... .

(a) towards the normal (b) away from the normal

(c) straight (d) backwards

10. After dispersion ..................... colour deviates the most.

(a) red (b) green

(c) yellow (d) violet

11. When white light is dispersed into seven colours ..................... colour

bends least.

(a) blue (b) violet

(c) red (d) yellow

12. ..................... light is scattered the least by the atmosphere.

(a) Red (b) Violet

(c) Yellow (d) Green

13. ..................... was the first scientist to use a glass prism to obtain the

spectrum of sunlight.

(a) Oersted (b) Joule

(c) Newton (d) Faraday

14. The apparent depth of an object placed in a denser medium and seen

through a rarer medium is ..................... .

(a) half its real depth (b) equal to the red depth

(c) less than real depth (d) greater than real depth15. A prism is a
transparent medium bound by ..................... plane surfaces

inclined at an angle.

(a) two (b) three

(c) four (d) one

16. When a ray of light passes from rarer medium to a denser medium, the

angle of refraction is ..................... .

(a) equal to angle of incidence

(b) independent of angle of incidence

(c) smaller than angle of incidence

(d) greater than angle of incidence

17. The apparent position of a star in the sky is ..................... .

(a) slightly lower than its actual position

(b) slightly higher than its actual position

(c) same as that of its actual position

(d) far away from its actual position

18. Advanced sunlight and delayed sunset increases duration of day by

..................... minutes.

(a) 30 (b) 4

(c) 1 (d) 10

19. Amongst the following ..................... has the highest refractive index.

(a) air (b) ice

(c) water (d) alcohol

20. When a ray is incident normal to the interface between any two
transparent

medium, the angle of incidence is ..................... .

(a) greater than angle of refraction(b)zero

(c) less than angle of refraction (d) 45º

21. The stars are ..................... sources of light as they are very far away.

(a) point (b) infinite

(c) important (d) primary

22. Twinkling of stars is due to change in ..................... of atmosphere

(a) temperature (b) refractive index

(c) pressure (d) climate

23. ..................... won a nobel prize for his outstanding work on scattering
of

light.

(a) Newton (b) Joule

(c) Dr. C. V. Raman (d) Ohm



Answers :

1. dispersion 2. blue

3. direction 4. relative speed

5. refractive index 6. mirage

7. 1.36 8. diamond

9. away from the normal 10. violet

11. red 12. Red

13. Newton 14. less than real depth

15. two 16. smaller than angle of incidence.

17. slightly higher than its actual 18. 4

position

19. alcohol 20. greater than angle of refraction

21. point 22. refractive index

23. Dr. C. V. Raman

Attached Files

Modal paper of Wonders of light part 2.pdf (708.0 KB, 2534 views)