Download App

Light – Reflection and Refraction — Science STD 10 — Question

CBSE BoardEnglish MediumSTD 10ScienceLight – Reflection and Refraction3 Marks
Question
What is the difference between regular reflection of light and diffuse reflection of light? What type of reflection of light takes place from:
  1. A cinema screen.
  2. A plane mirror.
  3. A cardboard.
  4. Still water surface of a lake
✓

Answer

In regular reflection, a parallel beam of incident light is reflected as a parallel beam in one direction; while in diffuse reflection, a parallel beam of incident light is reflected in different directions.
  1. Regular reflection.
  2. Regular reflection.
  3. Diffuse reflection.
  4. Regular reflection.

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 "[3 Mark Questions]" from Light – Reflection and Refraction→Light – Reflection and Refraction — all question types→Science STD 10 question papers→CBSE Board STD 10 question papers→CBSE Board question paper generator→

Similar questions

A person walks across a room in barefeet and puts his foot on a drawing pin lying on the floor. He lets out a cry. Explain what happens in his nervous system in bringing about this response.
→
Explain how, a reduction reaction of aluminium can be used for welding cracked machine parts of iron. Write a chemical equation for the reaction involved.
→
A white shirt has a yellow stain of curry. When soap is rubbed on this shirt during washing, the yellow stain turns reddish-brown. On rinsing the shirt with plenty of water, the reddish-brown stain turns yellow again.
  1. Name the natural indicator present in curry stain.
  2. Explain the changes in colour of this indicator which take place during washing and rinsing the shirt.
  3. What is the nature of soap (acidic/ basic) as shown by the indicator present in curry stain?
→
Identify the acid and the base from which sodium chloride is obtained. Which type of salt is it? When is it called rock salt? How is rock salt formed?
→
  1. Write electron-dot structures for magnesium and oxygen.
  2. Show the formation of MgO by the transfer of electrons.
  3. What are the ions present in this compound?
→
The end product of a process is ethanol and carbon dioxide with the release of energy. Name this process and write the pathway involved in the reaction.
→
State Mendel’s second law of inheritance.
→
Distinguish between esterification and saponification reactions with the help of the chemical equations for each. State one use of each (i) esters, and (ii) saponification process.
→
What is a thermite reaction? Explain with the help of an equation. State one use of this reaction.
→
Define resistance. Write the SI unit of resistance and define it. Match the correct range of resistivity with the materials given.
a. Conductors (i) $10^{-6} Nm$
b. Alloys (ii) $10^{12}$ to $10^{17} \Omega$
c. Insulators (iii) $10^{-6}$ to $10^{-8} m$
→