Skip to main content

CBSE I NCERT Class X Chapter: Light-Reflection and Refraction Quiz Questions

Image
By
Question: 1.  Why do we prefer a convex mirror as a rear-view mirror in vehicles?

 Question: 2.  Name the mirror that can give an erect and enlarged image of an object?

Question: 3.  What could be the position of the object if the image formed by a concave mirror is observed 
to be virtual, erect and larger than the object?

Question: 4.  Is the optical centre always at the centre of lens?

Question: 5.  When the image formed is virtual and erect, what is the magnification,  positive or negative?

Question: 6. When the image formed is real and inverted, what is the magnification,  positive or negative?

Question: 7.  Is mirror formula valid only for the plane mirror?

Question: 8.  Which light will refract more, a violet or red, if they pass through the same  glass slab with the 
same angle of incident?

Question: 9.  Does Snell’s law fail, if yes than when?

Question: 10.  What is a lens? 

 Answers for above Questions 

 Answer: 1.  Convex mirrors enable the driver to view much  larger area than would be  possible with a plane 
mirror.

Answer : 2.  When an object is placed between the pole and  the principal focus of  a concave mirror, the 
image formed is virtual, erect, and enlarged

Answer:  3.  If the image formed by a concave mirror is virtual, erect and larger than the  object, the position 
of the object should be between the pole of the mirror  and its principal focus.

Answer:  4.  No, only if both the curved surfaces are symmetrical, optical centre will be at  the centre.

Answer:  5.  When the image formed is virtual and erect, magnification is positive.

Answer:  6.  When the image formed is real and inverted magnification is negative.

Answer:  7.  No, the mirror formula is valid for plane as well as for all spherical mirrors for  all positions of 
the object.

Answer:  8.  Violet light will refract more than the red light, because its wavelength is less  than that of red.

Answer:  9.  Snell’s law fails when the light rays incident normally on the surface of a  refracting medium. In 
this case light passes un deviated from the surface i.e. no refraction occurs.

Answer:  10.  A lens is a portion of a transparent refracting medium bounded by two  spherical surfaces, 
generally spherical or cylindrical or one curved and one  plane surface. It has a perfect or approximate axial 
symmetry which  transmits and refracts light.

Links For   CBSE Class X Science Term-II
Carbon and Its Compounds
Periodic Classification of Elements  of Elements
Light - Reflection and Refraction
The Human Eye and the Colorful  World
How Do Organisms Reproduce ?
Heredity and Evolution
 Our Environment
Labels:

Comments

Post a Comment

CBSE ADDA :By Jsunil Sir : Your Ultimate Destination for CBSE Exam Preparation and Academic Insights

Living science ratna sagar class 6 solutions

By
Ratna sagar living science 6 answers by jsunil. Class6 Living science solution Term-1 Living Science Solution chapter-1 Source of food Download File Living Science Solution chapter-2 Component of food Download File Living Science Solution chapter-3 Fibre to fabric Download File Living Science Sol ch-4 Sorting of material into group Download File Living Science Soln ch-5 Separation of substance Download File Living Science Solution chapter-6 Change around Us Download File Living Science Solution ch-7 Living and Non Living Download File Living Science Solution ch-8 Getting to Know Plants Download File Living Science Sol ch-9 The Body and Its movements Download File Visit given link for full answer Class6 Living science solution Term-II
Post a Comment
Read more

Class 10 Chapter 02 Acid Bases and Salts NCERT Activity Explanation

By
NCERT Activity Chapter 02 Acid Bases and Salt Class 10 Chemistry Activity 2.1 Indicator Acid Base Red litmus No Change Blue Blue Litmus Red No change Phenolphthalein Colourless Pink Methyl Orange Pink   Yellow Indictors are substance which change colour in acidic or basic media. Activity 2.2 There are some substances whose odour changes in in acidic or basic media. These are called olfactory indicators. Like onion vanilla, onion and clove. These changes smell in basic solution. Activity 2.3 Take about 5 mL of dilute sulphuric acid in a test tube and add few pieces of zinc granules to it. => You will observe bubbles of hydrogen gas on the surface of zinc granules. Zn + H2SO4 --> ZnSO4 + H2 => Pass the Hydrogen gas through the soap solution. Bubbles formed in the soap solution as Hydrogen gas it does not get d...
Post a Comment
Read more

Class 09 Atoms and Molecules Numerical Problem based on Law of chemical Combination(Solved)

By
Class 09 Atoms and Molecules Numerical Problem based on Law of chemical Combination Law of conservation of mass Law of constant proportion Empirical formula 1. If 10 grams of CaCO 3 on heating gave 4.4g of CO 2 and 5.6g of CaO, show that these observations are in agreement with the law of conservation of mass.(Based on Law of conservation of mass) Solution:  Mass of the reactants = 10g ;  Mass of the products = 4.4 + 6.6g = 10g Since the mass of the reactants is equal to the mass of the products, the observations are in agreement with the law of conservation of mass. 2. 1.375 g of cupric oxide was reduced by heating and the weight of copper that remained was 1.098g.  In another experiment 1.179 g of copper was dissolved in nitric acid and the resulting copper nitrate was converted into cupric oxide by ignition . The weight of cupric oxide formed was 1.476 g. which law of chemical combinations does this data state? Solution: in first experiment: Copper oxide = 1....
Post a Comment
Read more

Class 10 Metal and Non MetalsChapter 03 NCERT Activity Solutions

By
X Class 10 NCERT Activity Explanation Class 10 Metals and Non Metals Activity 3.1 Page No. 37 Take samples of iron, copper, aluminium and magnesium. Note the appearance of each sample. They have a shining surface. Clean the surface of each sample by rubbing them with sand paper and note their appearance again. They become more shiny. => Freshly cut Metal have shiny surface Activity 3.2 Page No. 37 Take small pieces of iron, copper, aluminium, and magnesium. Try to cut these metals with a sharp knife and note your observations. They are very hard to cut. Hold a piece of sodium metal with a pair of tongs and try to cut it with a knife. Sodium can be cut easily with knife. Hence K and Na are soft metal cut with knife Activity 3.3 Page No. 38 Take pieces of iron, zinc, lead and copper try to strike it four or five times with a hammer. These metals are beaten into thin sheet on hammering. This property of metal is called malleability and metals are called malleable. Activity 3.4 Page ...
Post a Comment
Read more

Structure of Matter class07

By
The language of chemistry class 7 Basic science soled questions. Q. What is chemistry? Ans: Chemistry is a branch of science in which we study the composition, structure, properties and change of matter. Q. What is matter? Ans: Anything that is around us having some mass and occupies space is called matter. Q. What are the different classifications of matter? Ans: Matters are classified into element, compound and mixture. Q. What is element? Ans: Elements are the purest form of substance (matter) made up of same kinds of particles. The smallest unit of element is an atom. eg. Hydrogen, oxygen, carbon. Q. What is compound?            See full post   The language of chemistry class 7 Basic science Class 07 Basic sciences Chapter the Language of Chemistry A. Answer these questions 1. What does the formula of a substance tell us? Answer: Formula of a compound or an element represents the name and number of atoms present ...
Post a Comment
Read more