Light of Wavelength $\lambda$ Is Normally Incident on a Diffraction Grating G

question 40

Multiple Choice

Light of wavelength $\lambda$ is normally incident on a diffraction grating G. On the screen S, the central line is at P and the first order line is at Q, as shown. The distance between adjacent slits in the grating is:

• A) 3\(\lambda\)/5
• B) 3\(\lambda\)/4
• C) 4\(\lambda\)/5
• D) 5\(\lambda\)/4
• E) 5\(\lambda\)/3

---

Definitions:

Tax Revenue

Tax revenue is the income gained by governments through taxation, a primary source of income used to fund public services and obligations.

National Saving

The total amount of savings generated within a country, consisting of both private savings by households and public savings by the government.

Trillion

A numerical value represented as 1,000,000,000,000, or 10^12, often used in the context of discussing national budgets or macroeconomic figures.

Private Saving

The amount of income left after individuals have paid taxes and consumed goods and services, which can be used for investment or lending.