Cbse Class 8 Physics Sample Paper Term 1 Model 2 - http://cbse.edurite.com/cbse-sample-papers/cbse-sample-papers-for-class-8.html

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Summative Assessment – Semester I
Physics
Class: 8 Max Mks: 45
Time: 2 hrs
Chapters included are
1. Universe
2. Light
3. Heat
4. More about Solids, Liquids and Gases
General Instructions:
All questions are compulsory
Questions 1 to 5 are multiple-choice questions and carry 1 mark each. Choose the appropriate option
and write the answer in the answer sheet.
Question 6 to 10 carry 1 mark each and must be answered in 1 or 2 sentences.
Questions 11 to 19 carry 2 marks each must be answered in 2 or 3 sentences.
Questions 20 to 23 carry 3 marks each and must be answered in 5 or 6 sentences.
Question 24 carries 5 marks and must be answered in 7 or 8 sentences.
1. When the weight of a given body is less than weight of fluid displaced by it, then the body:
(a) Sinks
(b) Floats
(c) Just keeps in line with the surface of fluid
(d) None of the above
2. Sea breezes blows only:
(a) During day
(b) During night
(c) Throughout day and night
(d) None of these
3. During the dispersion of light, the least dispersed color is:
(a) Violet
(b) Green
(c) Red
(d) Yellow

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4. A ray of light travelling obliquely from denser to rarer medium:
(a) Bends towards the normal,
(b) Bends away from the normal
(c) Does deviate from the normal
(d) None of these
5. Our solar system belongs to:
(a) Elliptical galaxy
(b) Spiral galaxy
(c) Irregular galaxy
(d) None of these
6. Define vaporization.
7. State Archimedes’ principle.
8. The small, but very sensitive area on the retina is called ___________.
9. The average temperature of Sun’s atmosphere is called ___________.
10. What is hypermetropia?
11. What do you understand by the term thermal capacity? State its units.
12. Draw a neat diagram when a ray of white light passes through an equilateral glass prism.
13. What do you understand by the statement that specific heat capacity of copper is
400 J kg-1
°C-1
?
14. Why does a small amount of mercury on placing over a glass plate from a spherical ball?
15. Why no life exists on moon? Give two reasons.
16. Statements below are incorrect. Write correct statements.
(a) The band of even colors formed in the white screen when light splits on passing through
a prism, is called dispersion.
(b) Heat required to raise the temperature of 1g of a substance through 1°C is called
thermal capacity of the substance.

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17. What do you understand by the term atmospheric pressure? What is the average value at
sea level?
18. Draw a neat diagram when object is beyond 2F in case of concave lens.
19. Why is lunar eclipse a fairly common phenomenon as compared to the solar eclipse?
20. Draw a neat labeled diagram for the passage of ray of light through an equilateral glass
prism, showing clearly (a) angle of incidence (b) angle of deviation (c) angle of emergence
(d) angle of prism.
21. Calculate the thermal capacity of 1.5kg of water.
22. Why do ink pens start leaking on high altitude?
23. (i) Into what kind of orbit are placed remote sensing satellites?
(ii) Name five kinds of surveys which can be achieved through remote sensing satellites.
24. What do you understand by the term latent heat of vaporization? Support your answer with
an example.