10/18/2016
CBSE Papers, Questions, Answers, MCQ ...: Class 10 Light Reflection and Refraction (Short Q & A) 0
More Next Blog»
Create Blog Sign In
CBSE Papers, Questions, Answers, MCQ ... Blog provides NCERT solutions, CBSE, NTSE, Olympiad study material, model test papers, important Questions and Answers asked in CBSE examinations. References to Educational Sites and resources. Home
Resources
Class 12
Class 11
Class X
Class IX
Class 8
Class 7
Class 6
NTSE
CTET
SATURDAY, NOVEMBER 12, 2011
MATHS RESOURCES
Class 10 Light Reflection and Refraction (Short Q & A) Light Reflection and Refraction (Short Q & A) Q1: In which type of lens linear magnification is always less then one? Answer: Concave Lens always has linear magnification less than one, because it always gives diminished images. Q2: John obtained a magnification of 1 with concave mirror of focal length 10cm. What is the object distance from mirror? Answer: m = 1. Therefore u = v. Apply it in mirror formula, you will get v = 20 cm.
Mathematics Formulas and Resources
TUTORS HERE
Tutors Here to Get Tuitions Leads
Q3: Which mirror has a wider field of view? WHO'S WHO
Answer: convex mirrors have wilder field view, that's why these are used as rear view mirrors in vehicles. Q4: Which is optically denser out of the two mediums M1 and M2 having n = 1.71 and 1.36 respectively. Answer: M1 (it has higher value of refractive index). Q5: Identify a mirror having focal length –15cm Answer: concave mirror (see ve sign of focal length).
MAIL YOUR Q PAPERS AND IDEAS
Send your Question Papers, suggestions, ideas at email:
[email protected]
POPULAR ONES
Q6: Why does a ray change its path when it es from one medium to another medium? Answer: Because of refractive property of light. Q7: When a ray of light entering from air is incident on the surface of a glass slab at an angle of 90°, what will be the measure of angle of refraction?
http://cbsenotes.blogspot.in/2011/11/class10lightreflectionand.html
English Grammar Editing Exercise1 Editing Exercise Exercise 1: England has been long famous for her dramatist, a)…………… the greatest of who was William Shakespeare. b)…... The Fox and The Crow Story in Sanskrit (लोमश: एवं काक:) story 1 लोमश: एवं काक: एक य काक य मु खे रो टका आसीत । स: व ृय
1/5
10/18/2016
CBSE Papers, Questions, Answers, MCQ ...: Class 10 Light Reflection and Refraction (Short Q & A) Answer: It will be zero degree. Q8: Due to which property of light, sharp shadows of opaque objects are obtained? Answer: Since light travels in straight lines, any obstacle obstructing the path will cast its shadow. Q9: Two medium with refractive index 1.31 and 1.50 are given. In which case (i) Bending of light is more (ii) speed of light is more Answer: (i) 1.50 and ii) 1.31 Q10: Why does the coin placed at the bottom of a container appears to be raised when the container is filled slowly with water? Answer: Light ray emerging from water medium to air medium bends away and then reaches the eye. Q11: Under what circumstances there won’t be any refraction of light when it enters from one medium to another? Answer: There are two possible cases: (i) When light incidents at 90 degress (normal) it will not bend. (ii) Only applicable when light es from optical denser medium to rarer medium, if it is incident at an angle greater than critical angle, it will reflect (called internal reflection) but not refract. Q12: Can a plane mirror ever form a real image? Answer: Real image can only be formed when the reflected rays converge. As such for plane mirrors it is not possible. However, if the reflected yas are converged (or appears converged), it can form real image. Consider a source of light is at infinity (say sun), and plane mirror is very small in size, its reflected image will show a circular bright spot (image of the sun) on the screen. Q13: What feature of light corresponds (analogous) to loudness of sound? Answer: Brightness Q14(CBSE): Identify types of mirror without touching. Answer: Move mirror to and fro. Plane Mirror: Mirror image is of true size. Concave Mirror: Image is curved. Bringing the mirror closer, magnifies the image. Moving it away, image is inverted and reduced. Convex Mirror: Mirror image is always diminished but erect. The viewpoint is wider.
काक: एक य काक य मु खे रो टका आसीत । स: व ृय उप र शाखायां अ त ठत | तत: एक: ् लोमश: तत... ्
Jumbled Up sentences (Set1) Rearrange the following jumbled up sentences into meaningful ones. (taken from exam papers) 1. so / to / itchy / is / that / I / wait / M... Diversity In Living Organisms CBSE Class 9 Science (CH7) DIVERSITY IN LIVING ORGANISMS (NCERT Solutions, Q & A ...) Q1( CBSE 2011 ): What do you mean by bio diversity? Answer : Bio... CBSE Class 9 Science Chapter 10 Floatation & Archimedes’ Principle Floatation & Archimedes’ Principle Italian Stamp in honour of Archimedes credits: St. Andrews Univ Chapter Notes, NCERT Q &... CBSE Class 9 English Unit 5 Connectors Connectors Q1:Read the English folktale given below and fill up the blank spaces with suitable words. Answer : There were once ... CBSE Class 9/10 Editing Exercise 2 Editing Exercise (See Answers below) Q1( SQP 2011 ): The following age has not been edited. There is one error in each line. Wri...
VISITS COUNTER
4 0 0 4 4 0 1 6
Q15: What is the focal length of a plane mirror? LABELS
Answer: Infinity
Q16: Will the reflected rays converge at point when a parallel beam of light is incident on a concave mirror? Answer: Yes it will converge at the focal point of concave mirror.
Q17: Name any use of Concave lens.
Answer: Concave lens are mainly used in spectacles for the correction of shortsightedness.
Q19: Name the type of mirror which always forms virtual and diminished image.
http://cbsenotes.blogspot.in/2011/11/class10lightreflectionand.html
CTET (127) ntse (126) class9science (96) class10english (92) class10science (92) class9english (90) class8science (59) science quiz (51) class9maths (49) class10sstudies (46) class8 english (45) class9sstudies (45) class7science (44) class6science (43) class10 maths (38) class10hindi (36) class9hindi (31) class10 biology (25) class7english (24) class7sstudies (23) NSO Class7 (22) NSOClass9 (21) class9PSA (21) class8maths 2/5
10/18/2016
CBSE Papers, Questions, Answers, MCQ ...: Class 10 Light Reflection and Refraction (Short Q & A) Answer: convex mirror.
Q20: What is the angle of reflection if a ray falls normally on a plane mirror? Answer: Zero
Q21: A ray of light travelling in air enters obliquely into water. Does the light ray bend towards the normal or away from the normal. Why? Answer: When a ray of light travelling in air enters obliquely into water, it bends towards the normal. It happens because water is optically denser than air. Speed of light will also decrease.
Q22: What are the uses of convex mirror? Answer: rearview mirror reflector of street light shopping malls and buildings have long paths have convex mirrors around the corner Q23: List the uses of concave mirror? Answer:
(20) NSOclass10 (19) class8hindi (19) NSOClass8 (18) class10 chemistry (18) class12 BusinessStudies (18) class10 physics (17) class6english (17) class6sstudies (17) class8sstudies (17) class10sciencepaper (16) class11english (14) class12english (14) class11compScience (13) class7French (13) class8French (13) class9French (13) englishquiz (13) General Knowledge (12) cbse (12) class7maths (12) class7hindi (10) class11physics (9) class9 sanskrit (9) class10mcq (7) class11 PSA (7) class6French (7) class10FIT (6) class10French (6) class11chemistry (6) imoclass8 (6) imoclass9 (6) Olympiadmaths (5) class10sanskrit (5) class12Physics (5) class12 computerScience (5) class6sanskrit (5) class7sanskrit (5) class8sanskrit (5) software (5) JSTSE (4) class12chemistry (4) class9fit (4) class 6hindi (3) class10 physicsnumericals (3) class12science (3) class6maths (3) news (3) sciencequest (3) class12ancy (2) class12 Mathematics (2) class6hindi (2) english comprehension (2) hindiquiz (2) imo class10 (2) CareerAfter12 (1) class11 BusinessStudies (1) class11maths (1) class12
shaving mirror
Biology (1) class12Economics (1) class12
reflector in automobile lights and torches
Informatics Practices (1)
by dentists to see back side of tooth FOLLOWERS
reflector of solar furnaces Q24: How many images are formed for a point source kept in between two plane mirrors M1 and M2 at right angles to each other?
Followers (1058) Next
Answer: Three. Q25: What shall be the direction of the incident ray which after reflection from a spherical mirror retraces its path? Answer: In this case incident ray is directed towards the centre of curvature.
Q26: What are the characteristics of the image formed on a plane mirror? Answer: Characteristics of Image formed on plane mirror are:
Follow
1. Image is upright and is of same size as the object. FOLLOW ME ON TWITTER
2. It is virtual
Follow @eduvictors2011
3. Laterally inverted
eduvictor…
Posted by www.eduvictors.in at 4:09 AM
4.4K likes
Recommend this on Google Labels: class10physics, class10science Reactions:
interesting (3)
cool (2)
somewhat helpful (2)
7 comments:
Like Page
Be the first of your friends to like this
Suhasini Goyal December 28, 2013 at 11:11 PM Please increase the number of questions on lenses! there is hardly any question on lenses. Reply
http://cbsenotes.blogspot.in/2011/11/class10lightreflectionand.html
FEEDS
3/5
10/18/2016
CBSE Papers, Questions, Answers, MCQ ...: Class 10 Light Reflection and Refraction (Short Q & A) blaster123 February 2, 2014 at 7:22 AM One portion of a convex lens is covered as shown. Will the lens produces a complete image of the object? Describe in brief the characteristics of the image formed. Reply Replies gomathi ashokkumar February 22, 2014 at 5:54 AM No , the image cannot be produced.
Lucifer March 1, 2015 at 2:55 AM Image will be produced, but its intensity will decrease. You won't get a sharp and bright image.
Shrihari Senthil February 27, 2016 at 6:19 AM There Will Be 2 Cases 1st Case: If optic center is Covered , ie more than half of the lens is covered , then image will not be formed. Case 2 : If optic center is not covered , then the images will be formed clearly without any disorders
CURRENTLY VIEWING
NTSE / NSO MAT Quiz11 (SPOT The Odd One) By www.eduvictors.in 1 comment
Shrihari Senthil February 27, 2016 at 6:19 AM There Will Be 2 Cases 1st Case: If optic center is Covered , ie more than half of the lens is covered , then image will not be formed. Case 2 : If optic center is not covered , then the images will be formed clearly without any disorders
CBSE Class 7 Science CH17 Forests: Our Lifeline (MCQs) By www.eduvictors.in 1 comment
CBSE Class 10 Maths SA2 Sample Question Paper (2016)
Reply
Christabel Noble February 27, 2015 at 3:02 AM actually the complete image will be produced only the intensity of the image will be decreased.
By www.eduvictors.in 0 comment
EXPRESSPRINTZONE
Reply
Enter your comment... EDUVICTORS.COM
Comment as:
Publish
Select profile...
Preview IPU EXAMINATION PAPERS
IP Univ BCA, MCA, BBA Study Notes, Q Papers
DEVELOPER BYTES
http://cbsenotes.blogspot.in/2011/11/class10lightreflectionand.html
4/5
10/18/2016
CBSE Papers, Questions, Answers, MCQ ...: Class 10 Light Reflection and Refraction (Short Q & A)
Tips, Tricks and Business Ideas
COMPETE4EXAMS
Newer Post
Home
Older Post
Subscribe to: Post Comments (Atom)
TUITION CLASSES AT ROHINI, DELHI
Powered by Blogger.
http://cbsenotes.blogspot.in/2011/11/class10lightreflectionand.html
5/5