Question 1. What is role of diet in sports performance? Question 2. What are the six test items of the Kraus Weber muscular strength test? Question 3. What do you mean by diabetes? Discuss the procedure, benefits and contraindications of Bhujangasana. Question 4. Briefly discuss about sociological aspects of sports participation. Question 5. What do you mean by sports training? Highlight main features of features of Interval and Fartlek Training. Question 6. What is league tournament? Draw a fixture of 9 teams participating in league tournament League tournament. Question 7. What are the various factors affecting physiological fitness? Explain. Question 8. What are the types of personality and explain in detail the role of sports in personality development?
Answers
Answer:
Selina solutions
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Biology
Mathematics
Physics
Chapters in CONCISE Physics - Middle School - 7
Exercises in Light energy
Question 2
Q2) Fill in the blanks .
(a) Angle of incidence = ___________.
(b) The incident ray, the reflected ray and the normal lie in one ______.
(c) The image formed by a plane mirror is at a distance behind the mirror as ___________.
(d) The image formed by a plane mirror is erect and ______.
(e) We are able to see the objects around us due to ______ reflection.
(f) A ______ image cannot be obtained on a screen.
(g) One surface of mirror is made opaque by______ it followed by a thin coating of paint of lead oxide.
(h) A plane mirror ______reflect 100 percent light falling on it.
(i) The colour of an opaque object is the colour of light which it______.
(j) Magenta, cyan and yellow are the ______ colours.
Solution
Transcript
Solution :
(a) Angle of incidence = angle of reflection.
(b) The incident ray, the reflected ray and the normal lie in one plane.
(c) The image formed by a plane mirror is at a distance behind the mirror as the object is in front of it .
(d) The image formed by a plane mirror is erect and virtual.
(e) We are able to see the objects around us due to irregular reflection.
(f) A virtual image cannot be obtained on a screen.
(g) One surface of mirror is made opaque by silvering it followed by a thin coating of paint of lead oxide.
(h) A plane mirror does not reflect 100 percent light falling on it.
(i) The colour of an opaque object is the colour of light which it reflects.
(j) Magenta, cyan and yellow are the secondary colours.