40° 30° 20° 10° 0°-

Q: _4. Stefan-Boltzmann law is applicable for heat transfer by A. conduction B. convection C. radiation…

A: 4) We have asked Stefan Boltzmann law is applicable for heat transfer by  To answer this question we…

Q: When a glass of cold water is left on the table at room temperature, water droplets are seen on the…

A: To determine the reason of a glass of cold water left on the table at room temperature, water…

Q: Calculate the fraction of non-reflected light that is transmitted through a 106-mm thickness of…

A: Given value--- absorption coefficient = 0.0002. sample thickness = 106 mm. We have to find---…

Q: In winter, a pile of snow has a bright white color. Use this fact to explain why it takes a lot time…

A: In winter, a pile of snow has a bright white color. Use this fact to explain why it takes a lot time…

Q: At the beach, you can get a sunburn while under the shade of an umbrella. Explain the statement?

A: Sun burn is a radiation that affects the tissues upon over exposure to UV rays.

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: If you observe objects inside a very hot kiln, why is it difficult to discern the shapes of the…

A: When the object is inside a hot kiln, the object gets heated. This hot object emits thermal…

Q: A swatch of pure red fabric is viewed through a green filter. The fabric appearsA. Red.        B.…

A: Red is a combination of yellow and magenta. In order to reflect yellow and magenta color, these…

Q: A 64-cd point source of light is 3.0 m away from a painting. What is the illumination on the…

A:

Q: The following diagram shows a ray of light passing from the air into a glass block. 50° 90° 40° 70°/…

A: The angle of incidence is the angle made by the ray with the perpendicular at the point of the ray…

Q: Which of the diagrams is (are) incorrect? I 0, 0. glass diamond water glass Select one: O 1. III…

A: diagram 1 is incorrect  because there is not a condition for TIR(total internal refrection…

Q: The Pyrex glass mirror in a telescope has a diameter of170 in.The temperature ranges from -16C to…

A:

Q: Water on a clean glass plate spreads into a thin film but a small amount of water placed on a flat…

A: There exists cohesive force between the water molecules and adhesive force between the water and the…

Q: A blueish-green shirt does which of the following?   a.Reflects all light   b.Reflects only blue and…

A: we know that the color reflect the same color light and absorb another color light so we can see…

Q: Why is sunset red? Group of answer choices Psychology. The Sun itself turns redder at sunset. Blue…

A: Answer-: blue light is scattered away.

Q: The skin reflects most visible and IR-A (near-infrared) radiation

A: The statement is-

Q: When does total internal reflection occur? Show an example with a calculation or diagram.

A: Total internal reflection

Q: NOTE: Some of the pictures above may show both reflection & refraction. To count as a reflection,…

A: REFLECTION OF LIGHT:-  It is well known that when a ray of light reaches a smooth polished surface…

Q: Fig. 6.1 shows apparatus that is used to demonstrate some effects of the transfer of energy by…

A: In the given experiment: We need to conclude: (a) Two types of radiation (b)  The reason behind…

Q: When you look at a thin film of clear oil or gasoline on the surface of water, that film appears…

A:

Q: The inner and outer glasses of a 4-ft * 4-ft double- pane window are at 60°F and 48°F, respectively.…

A: Write the given values, determine the average temperature, and also determine the heat transfer…

Q: Red sunrises occur for the same reason as red sunsets. But sunsets are usually more colorful than…

A: The light rays coming from the sun toward earth either scattered or transmitted from the Earth’s…

Q: When you look at a shirt and it is blue…. WHY IS IT BLUE? What is being absorbed and what is being…

A: What colour our eye see is the reflected colour which an object reflects. Rest of the colours are…

Q: An object absorbs red, orange, yellow, blue, indigo, and violet light. What color is it? blue green…

A: Given: An object absorbs Red, Orange, Yellow , Blue, Indigo and violet light. To determine: which…

Q: Material Static Kinetic steel on steel aluminum on steel copper on steel rubber on concrete wood on…

A: Static friction: which keeps the box from moving without being pushed ans it must me overcome with…

Q: In winter, a pile of snow has a bright white color. Use this fact ro explain why it takes a lot time…

A: Snow is a great insulator. The heat inside from your body warms up the air inside pretty quickly,…

Q: Color indicates surface temperatures. (True or false)

A: We know every body emit and absorb the radiation.

Q: A green pencil does which of the following

A: Answers is (B) Reflects only green light . Explanation is in next step.

Q: Which of the following statements is correct?

A: ANS: The water in Glass A is warmer than the water in Glass B; therefore, the particles in Glass A…

Q: A coin is placed at the bottom of an 80.0 cm deep aquarium filled with water. You are looking at the…

A: Given data: Real depth of coin = 80.0 cm Aquarium filled with water Required: Apparent depth

Q: Wheels from a toy cart are rolled from a concrete sidewalk onto the following surfaces: A, a paved…

A: When the toy cart encounters the surface, the left tire hits the surface first and the result of…

Q: You can get a sunburn on a cloudy day, but you can’t get a sunburn even on a sunny day if you are…

A:

Q: which warms more quickly in sunlight -a colourless or coloured piece of glass? Also explain Why?

A: A coloured glass can absorb all the colours except its own colour while the colourless glass can’t…

Q: An open tank with height of 500cm is filed with water. A hole o.1m above the bottom of the tank is…

A: Given value--- height of tank = 500 cm. hole is o.1m above the bottom of the tank . We have to…

Q: Which of the following colors indicates an object of the lowest temperature? (A) Violet (B) Blue (C)…

A: Answer:- (B) Blue    Blue colors indicate an object of the lowest temperature.    Because    In any…

Q: Describe the resulting colors when the following lights are mixed together: Red and blue light…

A: Answers  1. Magneta 2. Cyan 3. Black

Q: Radian is used to measure   A) Temperature B) Intensity of Flame C) Angle D) Solid Angle

A: Radian is the unit of  plane angle, which is given by following formula: Angle=Arcradius   Whereas,…

Q: A 300cm3 glass beaker at 20oC is filled completely with liquid mercury also at 20oC. If BOTH the…

A:

Q: Which is an example of diffuse reflection? Light reflects off a green sheet of construction paper.…

A: In all the options mentioned here, the incident light ray does not emerge as a single coherent light…

Q: Part A  the moderate temperatures of the islands throughout the world has mainly to do with water's…

A: Part A:The moderate temperature range of islands plays main role in determining the high specific…