Question

Q 2
A ans for this physics class 10 icse

Answer 1

Answer:

1.infrared radiations.

2.infra-red radiations have long wavelength due to which they are scattered less and travel long distances .They can penetrate easily through fog.

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Answer 2

Answer:

2.(a) (i) Infrared radiation.

(ii)Infrared radiation are used in photography at night and also in mist and fog because they have long wavelength. As they are having low frequency the energy associated with them is also low so they do not scatter much and can penetrate appreciably through it.

Explanation:

Infrared radiation.

They are ideal for photography in fog because they are not much scattered and can penetrate through long distances. their wavelength is of order 8000 angstrom to 10^7 angstorm.