Question

18.
In how many broad groups, a wireless transmission can be divide
ਇੱਕ ਵਾਇਰਲੈਸ ਟ੍ਰਾਂਸਮਿਸ਼ਨ ਨੂੰ ਕਿੰਨੇ ਵਿਆਪਕ ਸਮੂਹਾਂ ਵਿੱਚ ਵੰਡਿਆ ਜਾ ਸਕਦਾ ਹੈ ?
(a) 7
(b) 6.
(C) 3​

Answer 1

Given:   wireless transmission

To Find : In how many broad groups, a wireless transmission can be divided

a) 7

(b) 6.

(C) 3​

Solution:

Broadly , a wireless transmission can be divided in three groups

wireless transmission

Radio waves.

Radio waves have frequencies  between 30 Hz to 300 MHz

Micro waves.

Micro waves have  frequencies  between 300 MHz and 300 GHz  

Infrared waves.

300 GHz – 430 THz

Hence Broadly , a wireless transmission can be divided in three groups.