A particular station of All India Radio, New Delhi, broadcasts on a frequency of 1,368 kHz (kilohertz). The wavelength of the electromagnetic radiation emitted by the transmitter is : [speed of light, ]

1. 2192 m

2. 21.92 cm

3. 219.3 m

4. 219.2 m

To view explanation, please take trial in the course below.
NEET 2023 - Target Batch - Aryan Raj Singh
To view explanation, please take trial in the course below.
NEET 2023 - Target Batch - Aryan Raj Singh
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A monochromatic infrared range finder of power 1mW emits photons with wavelength 1000 nm in 0.1 second. The number of photons emitted in 0.1 second is-
(Given -h = $$6.626 \times 10^{-34} J~s$$ , $$c = 3 \times 10^8 m~s^{-1},$$ Avogadro number = $$6.022 \times 10^{23}$$)
1. $$30 \times 10^{37}$$
2. $$5 \times 10^{14}$$
3. $$30 \times 10^{34}$$
4. $$5 \times 10^{11}$$