Evaporation / वाष्पीकरण
Evaporation is the slow conversion of a liquid into vapour even below its boiling temperature.
Liquid का boiling temperature से नीचे भी slowly vapour में convert होना Evaporation कहलाता है।
Humidity / आर्द्रता
The amount of water vapour present in air is called humidity.
Air में present water vapour की amount को Humidity कहते हैं।
Hygrometer / हाइग्रोमीटर
The source states that relative humidity is measured by a hygrometer.
Source के अनुसार Relative Humidity को Hygrometer से measure किया जाता है।
Transmission of Heat / ऊष्मा संचरण
Transfer of heat from one place to another is called transmission of heat.
Heat का एक place से दूसरे place तक transfer होना Transmission of Heat कहलाता है।
Conduction / चालन
The source states that heat transmission in solids takes place through conduction.
Solids में heat transfer primarily Conduction के द्वारा होता है।
Convection / संवहन
The source states that heat transfer in liquids and gases occurs by convection.
Liquids और gases में heat transmission Convection द्वारा होता है।
Ventilators / रोशनदान
Ventilators are provided near the upper part of rooms so that hot air can escape by convection according to the source.
Room में hot air को convection के द्वारा बाहर निकलने देने के लिए ventilators provide किए जाते हैं।
Radiation / विकिरण
Heat from the Sun reaches Earth by radiation.
Sun से Earth तक heat Radiation के द्वारा पहुँचती है।
Simple Pendulum / सरल लोलक
The source defines a simple pendulum as a heavy point mass suspended from a rigid support by means of a string described as elastic and inextensible in the text.
Source Simple Pendulum को rigid support से string द्वारा suspended heavy point mass के रूप में describe करता है।
Time Period of Pendulum / लोलक का आवर्तकाल
The source states that the time period of a simple pendulum does not depend upon the mass, shape or size of the bob and its amplitude of oscillation in the context presented.
Source के अनुसार Simple Pendulum का time period bob के mass, shape और size पर depend नहीं करता।
Pendulum Clock in Summer and Winter / गर्मी एवं सर्दी में पेंडुलम घड़ी
The source states that a pendulum clock goes slow in summer and fast in winter.
Source के अनुसार Pendulum Clock summer में slow तथा winter में fast चलती है।
Pendulum in a Lift / लिफ्ट में लोलक
- If the lift descends with acceleration, the time period increases according to the source.
- If the lift ascends with acceleration, the time period decreases.
- If the lift falls freely under gravity, the source states that the time period becomes infinite.
Lift की acceleration effective gravity को affect करती है और इसलिए pendulum के time period में change आता है।
High-Yield Revision / महत्वपूर्ण पुनरावृत्ति
- Liquid to vapour below boiling point → Evaporation
- Water vapour in air → Humidity
- Relative humidity → Hygrometer
- Solids → Conduction
- Liquids and gases → Convection
- Sun to Earth → Radiation
- Pendulum clock in summer → Slow
- Pendulum clock in winter → Fast
- Free-falling lift → Pendulum time period infinite in source