SATHEE: Ray Optics and Optical Instruments

Ray Optics and Optical Instruments - Result Question 17

17. Wavelength of light of frequency $100 H z$ [1999]

(a) $2 \times 16^{6} m$

(b) $3 \times 10^{6} m$

(d) $5 \times 10^{6} m$

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Answer:

Correct Answer: 17. (b)

Solution:

(b) Frequency $(n) = 100 H z$

$v = n λ$

$λ = \frac{3 \times 10^{8}}{100}$

[where, velocity of light $(v) = 3 \times 10^{8} m / s$ ]

$λ = 3 \times 10^{6} m$ .

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Ray Optics and Optical Instruments - Result Question 17

17. Wavelength of light of frequency 100Hz [1999]

Answer:

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17. Wavelength of light of frequency $100 H z$ [1999]