Why do we wear white or light coloured clothes in summer and dark coloured clothes in winter?

Q: Even though metal is a good conductor, frost can be seen on parked cars in the early morning even…

A: The radiation from the Sun will be absent early in the morning. Therefore, the surrounding…

Q: What does thermal interaction cause?

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Q: What is meant by the statement that a thermometer measures its own temperature?

A: When we insert a thermometer in any medium it comes in thermal equilibrium with the surrounding…

Q: Why are thermometers that are used in weather stations shielded from the sunshine?

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Q: Calculate the one temperature at which Fahrenheit and Celsius thermometers agree with each other.…

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Q: Water vapor is an invisible gas. How can an increase in relative humidity affect visibility?

A: Water vapour is the gaseous condition of H2O that is imperceptible to the naked eye. Clouds are…

Q: you may know, a black colored car hood can get hot enough in summer to fry an egg. If a white car…

A: we know that Darker paint colors, especially black, will absorb more of the heat from the sun and…

Q: Standing in front of a fire, we can sense both its heat and its light. How are the light and heat…

A: Standing in front of a fire, we can sense both its heat and its light.  The light and heat radiated…

Q: Consider a hot boiled egg in a spacecraft that is filled with air at atmospheric pressure and…

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Q: What is evaporation?

A: Evaporation is a fundamental part of the water cycle and it is constantly occurring throughout the…

Q: Why is the front surface of a thermometer curved as shown?

A: The front surface of the thermometer is curved so as to produce a kind of magnifying effect to make…

Q: Why is Mercury Used in Thermometers?

A: Mercury is the only metal that is in liquid state at room temperature. It is used in thermometers…

Q: If you had beeswax attached to one end of a metal skewer and you placed the other end of the skewer…

A: As it is known that the metals are the good conductor of heat

Q: Why did we use mercury in barometers and thermometers?

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Q: Why does an iron ball seem to have a lower temperature than a wooden ball despite having the same…

A: iron ball seem to have a lower temperature than a wooden ball despite having the same temperature

Q: Why firewalkers dont burn their wetted feet when they walk barefoot on red-hot coals

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Q: Mention four properties of thermal radiation?

A: If a body emits thermal radiation, at any temperature, it consists of wide range of frequencies. To…

Q: When fighting fires, a firefighter must use great caution to hold a hose that emits large amounts of…

A: The hose is pumping a lot of water with large mass at a high speed. This means that water has a…

Q: If a thermometer is allowed to come to equilibrium with the air, and a glass of water is not in…

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Q: Why is white wash sometimes applied to the glass of florists greenhouses in the summer?

A: A greenhouse traps heat inside it. Sunlight entering through the glass gets reflected inside the…

Q: What is meant by temperature radiation?

A: When a matter having temperature greater than absolute zero, certain amount of electromagnetic waves…

Q: Blue color of the sky represents Tyndall effect a)T b)f

A: The blue color of sky is due to scattering of white light from the dust particles present in…

Q: Is there any connection between object's feeling hot or cold and its thermal conductivity?

A: Thermal conductivity is the amount of heat transferred per unit time through unit area with a…

Q: Why does ball pen ink written on paper does not spread when water is spilled on it?

A: Ink and water are immiscible liquids so they don't mix

Q: at beach, you can get a sunburn while under the shade of an umbrella.What is your explanation?

A: Despite of being under the shade or umbrella, one can get the sunburns at the beach because…

Q: Why is the sky darker blue when you are at high altitudes?

A: The blue wavelength of sunlight are preferentially scattered by the Earth’s atmosphere. So generally…

Q: What do you notice when you get into a car that has been sitting in the Sun for a while?

A: the inside of the car will warm because radiation is coming in but not much is going back out.

Q: An object emits 30 Watts of power. If it were a perfect black body, other things are being equal, it…

A: Let the intensity of the radiation of an object is denoted by I, ε denotes the emissivity of the…

Q: Which Thermometer would be better suited to measuring the temperature of liquid nitrogen at 77K?

A: Introduction: Temperature is the physical quantity, which measures the equivalent amount of energy…

Q: structions: What temperature is shown on the thermometer? 100°. 90° 80° 70° 60 50 40° 30% 20° 10° 0%

A: First, look into the scale of the thermometer. In the given question or diagram 100 is divided into…

Q: What is a thermograph?

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Q: A new quilt is warmer than old one. Why?

A: The working process of quilt is to keep warm the body. Quilt act like a insulator it keep the air…

Q: During daytime at the beach, the sand is hotter than the water in the sea. Why is this so?

A: The specific heat of water is high which is 4200 J/kg C.

Q: Water at the base of a waterfall is slightly warmer than at the top. Why?

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Q: When you step inside a warm ski lodge on a cold day, you find your eyeglasses fog. Why does this…

A: Due to condensation fog can be found on eyeglass.

Q: The temperature in Boston was 40°F when it was 80°F in St. Petersburg, FL. What is your response to…

A: The temperature in Boston was 40°F when it was 80°F in St. Petersburg, FL. A friend suggests that it…

Q: The bulb of one thermometer is spherical while that of other is cylindrical. Both have equal amount…

A: The surface area of the cylindrical bulb will be more compared to the spherical bulb. Both the bulbs…

Q: Why is the front surface of a thermometer curved as shown?

A: The front surface of a thermometer is curved as it serves a magnifying effect due to the refraction…

Q: How are we able to determine the chemical composition and temperature of any visible object?

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Ideal Gas Law

Ideal gas law states that the product of pressure and volume of a gas directly varies with the product of the number of moles, the universal gas constant, and the temperature of the gas.