Question

1. Write the value of the speed of light in vacuum.
2. X: Refractive index n=c/v
Y: Refractive index has no units
A) Both are correct B) X is correct, Y is wrong
C) X is wrong, Y is correct D) Both are wrong.
3. Which one of the following materials cannot be used to make a lens?
A) water B) glass C) plastic D) clay
4. Which lens can form Real and Virtual image ?
5. Matching
X) Least distance of distinct vision () P) 25 cm
Y) Angle of vision
(Q) 30 cm
() R) 60°
6. A person is advised to wear spectacles with convex lens. What type of defect of vision is
he
suffering from?
7. The incomplete period of the periodic table is
8. The first attempt classification of elements was made by
9. What do we call
the self linking property of carbon?
10. Write the electronic configuration of carbon atom.
11. Bond angle of BeCl, is
A) 120° B) 109°28' C) 180° D) 104°31'
12. Match the suitable answers of section-B with section-A​

Answer 1

Answer:

omg how many questions are there