Download App

P-1 Refraction of light — Science STD 10 — Question

Maharashtra BoardEnglish MediumSTD 10ScienceP-1 Refraction of light5 Marks
Question
Refraction observed in the atmosphere.
✓

Answer

When a ray of light passes obliquely from an optically rarer medium to an optically denser medium, it bends towards the normal at the point of incidence. If opposite is the case, the ray bends away from the normal.

Atmosphere is never static. Air is mobile and its density and temperature are not uniform. As a result, in general, the path of a ray of light through atmosphere of varying refractive index is a curve. The refractive index of cool air is greater than that of hot air.

Atmospheric refraction of light results in many interesting optical phenomena such as twinkling of a star, advanced sunrise and delayed sunset, mirage and flickering of an object seen through a turbulent stream of hot air rising from a fire.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "Answer the following questions: [5 M]" from P-1 Refraction of light→P-1 Refraction of light — all question types→Science STD 10 question papers→Maharashtra Board STD 10 question papers→Maharashtra Board question paper generator→

Similar questions

 An object thrown vertically upwards reaches a height of 500 m . What was its initial velocity? How long will the object take to come back to the earth? Assume $g =10 m / s ^2$
→
Draw a neat labelled diagram: Magnetic separation method.
→
How much energy will be available to hawks in the food chain comprising hawk, snake, paddy and mice, if 10,000 J of energy is available to paddy from the sun?
→
Write short notes :
Hope's apparatus
→
Match the organisms given in column I with the methods of reproduction/propagation given in column II:
 
Column I
 
Column II
(i)
Plasmodium
(a)
Spore formation
(ii)
Spirogyra
(b)
Leaves
(iii)
Jasmin
(c)
Regeneration
(iv)
Apple tree
(d)
Budding
(v)
Bryophyllum
(e)
Binary fission
(vi)
Potatoes
(f)
Layering
(vii)
Rhizopus
(g)
Fragmentation
(viii)
Hydra
(h)
Tubers
(ix)
Planaria
(i)
Cutting
(x)
Leishmania
(j)
Multiple fission
(xi)
Sugar cane
(k)
Grafting
(xii)
Rose
 
 
→
Explain why the value of g is zero at the centre of the earth
→
Balance the following equation stepwise.
Take into account the time required for following processes. Classify them into two groups and give titles to the groups.
(i) Cooking gas starts burning on ignition.
(ii) Iron article undergoes rusting.
(iii) Erosion of rocks takes place to form soil.
(iv) Alcohol is formed on mixing yeast in glucose solution under proper condition.
(v) Effervescence is formed on adding baking soda into a test tube containing dilute acid.
(vi) A white precipitate is formed on adding dilute sulphuric acid to barium chloride solution.
→
Modern techniques like surrogate mother, sperm bank and IVF technique will help the human beings. Justify this statement.###Despite various diagnostic tests, a couple could not have a child. In this situation, which remedies will you suggest?
→
Explain the perception of colour in the human eye.
(OR)
Explain in short perception of colour.
(OR)
Write a note on perception of colour.
→
A and B are the two systems of control and coordination in the human body. The messages in system A are transmitted in the form of chemical substances C which travel comparatively slowly through the blood stream. The substances C are made in tissues D present in the head and trunk of human body. The messages in system b are transmitted very quickly in the form of electrical impulses through fibres E. The effect of messages transmitted by system b usually lasts for a much shorter time as compared to those transmitted by system A.
  1. Name the system A. What does system A consist of?
  2. Name the chemical substance C.
  3. What is tissue D? Name any five such tissues in the human body.
  4. Name the system B. What does system B consist of?
  5. Name the fibres E.
  6. State whether system A controls the working of system B or system B controls the working of system A.
→