जॉइन Examsbook
उत्तर : 1. "0.1 nm"
X किरणो की तरंग -द्रेर्ध्य कितना होता है ?
5प्र:
X किरणो की तरंग -द्रेर्ध्य कितना होता है ?
- 10.1 nmtrue
- 20.2 nmfalse
- 30.3 nmfalse
- 40.4 nmfalse
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उत्तर : 1. "0.1 nm"
व्याख्या :
X-rays have wavelengths from 0.01 to 10 nanometers, frequencies from 30 petahertz to 30 exahertz (3 × 1016 Hertz to 3 × 1019 hertz (Hz)) and energies from 120 electron volts to 120 kilo electron volts. The wavelength of X-rays is shorter than that of ultraviolet rays and longer than that of gamma rays.