According to Bohr's theory

Options

A. When an atom gets the required energy from outside it jumps from lower to higher orbit and remain there
B. When an atom gets the required energy from outside it jumps from lower to higher orbit and remain there for very short intervats of time and remain back to the lower orbit , radiation energy
C. Angular momentum of an electron is propartional to n
D. Angular momentum of an electron is propartional of n

Explanation

**Step-by-Step Solution:**

1. **Understanding Bohr's Theory**: According to Bohr's theory of the hydrogen atom, electrons orbit the nucleus in specific, quantized energy levels or orbits. The energy levels are designated by the principal quantum number \( n \).

2. **Energy Absorption and Electron Transition**: When an atom absorbs energy (from an external source), an electron can transition from a lower energy level (n1) to a higher energy level (n2). This transition is often referred to as an electron "jumping" to a higher orbit.

3. **Temporary State of Higher Energy Level**: Once the electron jumps to the higher energy level, it does not stay there permanently. Instead, it remains in that state for a very short interval of time before returning to its original lower energy level. During this transition back to the lower energy level, the electron emits energy, typically in the form of light.

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