Answer / amita sharma

Ultraviolet rays:-The sun rays are composite of many colours. It is seen by passing the light through prisms. Some are visible but other rays are but visible. Just below the violet region of sun rays ultra violet rays are situated. Ultraviolet rays cannot excite the eye but it excites photographic plate. The ray is very important for medical purpose

What is black body ?

1 Answers  

---

Why does fountain pen filler drew up ink ?

4 Answers  

---

Suppose a car is traveling at 72kmph, and if that car slows down to 60kmph it takes an extra 1 hour to cover that same distance. At 72kmph, how long did it take forthe car to cover that distance?

0 Answers  

---

Find the physical quantity in units from the equation: (Force*Distance)/(Velocity*Velocity)

0 Answers   TCS,

---

How is radiocarbon produced in the atmosphere?

0 Answers  

---

What is Gravitational Force and why is everything being attracted towards Earth instead of other Planets.Can you describe in Terms of IT field when it comes to Network Topology?

3 Answers  

---

to find the temperature of the sun, the following law is used 1. Charles'law, 2. Stefan's fourth power law of radiation, 3. Boyle's law, 4. Kirchhoff's law

4 Answers   GMR,

---

Why dies a small quantity of air introduced into the top of the barometer tube depress the level of mercury ?

3 Answers  

---

Explain the Heat Engines ?

1 Answers  

---

our breath can produce current?

2 Answers  

---

list and describe the three types of transformer?

3 Answers  

---

Why does water boil at 100oC ?

1 Answers  

---