Q1. Fill in the blanks.
i. An image that cannot be obtained on a screen is called ___________.
ii. Image formed by a convex _______is always virtual and smaller in size.
iii. An image formed by a _________mirror is always of the same size as that of the object.
iv. An image which can be obtained on a screen is called a ______image.
v. An image formed by a concave ______cannot be obtained on a screen.
vi. A virtual image larger than the object can be produced by a ________________.
i. We can obtain an enlarged and erect image by a convex mirror. _____
ii. A concave lens always form a virtual image. _______
iii. We can obtain a real, enlarged and inverted image by a concave mirror. _______
iv. A real image cannot be obtained on a screen. _______
v. A concave mirror always form a real image. _______
vi. In the mirror the right appears left and the left appears right. _______
Q3. Which type of mirror can form a real image?
Q4. Which type of lens forms always a virtual image?
Q5. Give an example of a curved mirror.
Q6. What are the two types of spherical mirror?
Q7. What is real image?
Q8. Write some uses of lenses.
Q9. What is convex mirror?
Q10. What happens when light falls on a polished or a shiny surface?
Q11. What makes things visible to us?
Q12. What is diverging lens?
Q13. What kind of image is formed by concave lens?
Q14. What is the nature of the image formed by a convex mirror?
Q15. What is reflection of light?
Q16. What is concave mirror?
Q17. Why we are not able to see the candle flame through a bent pipe?
Q18. How can we change the path of light?
Q19. What type of image does the outer side of a spoon show?
Q20. What happens when light falls on a mirror?