Explain how many femtometers are in a nanometer?

948

---

Explain what is free fall acceleration?

995

---

Explain what is relation between magnetic and electricity and why?

912

---

Explain what is optical medium?

904

---

Explain the working of basic rubber ink filler

903

---

Explain what is the rectilinear propagation of light?

941

---

Explain what is photometry?

898

---

Tell me when taken to the top of a mountain, a clock will go fast or go slow or no change or stop?

873

---

Explain what is h1n1?

923

---

Explain what is the shadows?

915

---

Explain what is the heterogenous?

887

---

Tell me how we are getting light from electrical bulb?

859

---

Draw a graph between frequency of photon and velocity of photo electron?

860

---

What are the ten satellite launched from india and year of launch?

957

---

explain the proper definition of light?

944

---