Science
The below image shows a thin lens of focal length 5 m.
(i) What is the kind of lens shown in the above figure?
(ii) If a real inverted image is to be formed by this lens at a distance of 7 m from the optical centre, then show with calculation where should the object be placed?
(iii) Draw a neatly labelled diagram of the image formation mentioned in (ii).
Related Questions
Given below are certain situations. Analyze and describe its possible impact on a person:
a) Testes of a male boy are not able to descend into scrotum during his embryonic development.
b) Vas deferens of a man is plugged.
c) Prostate and seminal vesicles are not functional.
d) Egg is not fertilised in a human female.
e) Placenta does not attach to the uterus optimally.
a) A doctor has advised Sameer to reduce sugar intake in his diet and do regular exercise after checking his blood test reports. Which disease do you think Sameer is suffering from? Name the hormone responsible for this disease and the organ producing the hormone.
b) Which hormone is present in the areas of rapid cell division in a plant and which hormone inhibits the growth?
A 10 cm long pencil is placed 5 cm in front of a concave mirror having a radius of curvature of 40 cm.
(i) Determine the position of the image formed by this mirror.
(ii) What is the size of the image?
(iii) Draw a ray diagram to show the formation of the image as mentioned in the part (i).
The table given below shows the hints given by the quiz master in a quiz.
S. No. HINT (i) Substance 'C' is used as a preservative. (ii) 'C' has two carbon atoms; 'C' is obtained by the reaction of 'A' in presence of alkaline Potassium permanganate followed by acidification. (iii) Misuse of 'A' in industries is prevented by adding Methanol, Benzene, and pyridine to 'A'. (iv) 'F' is formed on heating 'A' in presence of conc Sulphuric acid. (v) 'F' reacts with Hydrogen gas in presence of Nickel and Palladium catalyst. Based on the above hints answer the following questions
(a) Give the IUPAC names of A and F
(b) Illustrate with the help of chemical equations the changes taking place. (A ⟶ C and A ⟶ F)
OR
(b) Name the chemical reactions which occur in steps 2 and 5. Identify the compounds formed in these steps if 'A' is replaced with its next homologue.