Explain how many femtometers are in a nanometer?

919

---

Explain what is free fall acceleration?

970

---

Explain what is relation between magnetic and electricity and why?

887

---

Explain what is optical medium?

886

---

Explain the working of basic rubber ink filler

884

---

Explain what is the rectilinear propagation of light?

914

---

Explain what is photometry?

878

---

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

859

---

Explain what is h1n1?

908

---

Explain what is the shadows?

899

---

Explain what is the heterogenous?

871

---

Tell me how we are getting light from electrical bulb?

835

---

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

846

---

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

935

---

explain the proper definition of light?

932

---