Under which condition is dew formation less likely?

Correct answer: तेज हवा और बादलयुक्त रात

Correct answer: B. Dew forms when a surface cools enough for the air immediately touching it to reach the dew point. At or near the dew point, air becomes saturated and excess water vapour condenses into liquid droplets on grass, leaves, or other cool surfaces. A calm, clear night is favourable because the ground can lose heat by radiation without much mixing of warmer air. A cool surface also supports condensation. Option A is therefore favourable, not unfavourable. Option C is favourable for the same reason: clear skies permit strong nighttime cooling and the surface becomes cold. Option D is also favourable because a temperature near the dew point means that only a little additional cooling may be needed for condensation. Option B is correct because strong wind mixes air near the ground with warmer air above and can reduce surface cooling; clouds can also limit the loss of heat from the surface. Dew can still form in some windy or cloudy situations, but it is generally less likely. Memory cue: calm, clear, cool, and moist conditions favour dew.