Which of the following are protective measures against nonionizing radiation from heat lamps?* Filters Diffuser Nonreflective surfaces None of the above

Q: Distinguish between the primary and secondary excitation processes that occur in fluorescent lamp.

A: The excitation and de-excitation of the photons in the fluorescent lamps are explained using the…

Q: Choose the BEST answer to the following: The electric field inside the dome of a Van de Graaff…

A: The electrons inside the dome repel each other and they reach the domes outer sphere. This way the…

Q: dentify the types of energy transformat A flashlight uses a battery to create current and that…

A: we can change energy from one form to another but energy will be constant on these transformation .…

Q: How wall of electrical kettle use infrared

A: The body of electrical kettle is consist of stain steel or plastic.

Q: What is the relative amplitude of the flow in the filament of a miniature lamp the instant power is…

A: As we know that the brightness of the bulb depend upon the resistance and current through the bulb.…

Q: This works because of thermal emission (a) solar cell (b) pyrometer (c) optical fiber…

A:

Q: 2. List down the energy consumed and produced by a light bulb.

A: Bulb consume electric energy .

Q: Thermocouple works on the * principle of Seeback effect Hall effect Eddy current effect Total…

A: The seeback effect:this effect states that when a closed circuit is formed by joining two different…

Q: What are three or four Quantitative examples of thr light buld or in other words “Incandescent Light…

A: Given: What are three or four Quantitative examples of the light bulb or in other words…

Q: Bulbs convert the energy of moving charge to light and heat True or False?

A: Energy conversion in light bulb:

Q: Which of the following would not make for a good insulator of electricity? O A metal pipe O Wood O…

A: Required : Which of the following is not a good insulator.

Q: Mineral-insulated cables are not used in. O computers O smoke control systems O alarm circuits O…

A: Mineral insulated cables are made using copper conductors put inside sheath of copper. Inorganic…

Q: A B D + 1. Bulb B will glow more brightly than A. Bulb D will glow the brightest than A and B. Bulb…

A:

Q: waves

A: Electromagnetic wave waves are a propagating pair of electric and magnetic field components, and the…

Q: Choose the BEST answer to the following: A galvanometer can be calibrated to read electric (a)…

A: A galvanometer is an electromechanical device. It consists of a constant magnetic field, an iron…

Q: Which of the following glows with special colour depending on the nature of gas in the fluorescent…

A: A fluorescent tube works on the principle of producing fluorescence due to the collision of…

Q: Explain what is electromagnetic induction, and use it to illustrate the working principle of an…

A:

Q: Calculate the power used by a microwave oven that uses 112 500 J of energy in 2.5 minutes.

A: power = work done/time taken

Q: Calculate the total electrical energy consumed for a load usage of 3 lamps (28 watts each) for 13…

A: Power of each lamp , P = 28 watts  Time , T = 13 hrs  Number of lamps , N = 3  To find = Electrical…

Q: A material that perfectly absorbs light is called: Black Body Albedo Reflective…

A: Black body is a body which absorbs all the incoming wavelengths of light and then even reflects…

Q: A school classroom having a general dimension of 20 ft x 40 ft is to be lighted at an average…

A: The number of fixture is calculated by using the given expression below. Here, L, fc, A represent…

Q: The electrical domestic tube light gives white fluorescent light because of   A) colision between…

A: the electrical domestic tube light gives white fluorescent light because of falling of ultra violet…

Q: A microwave oven sets up a standing wave of wavelength 12.2 cm between two parallel conducting walls…

A: The relation between wavelength, frequency, and speed of light is given by: c=fλwhere,c is speed of…

Q: . Create a good label (name) for each signal described below: (a)*A sensor outputs a LOW when the…

A:

Q: Direction: In the box are different physical quantities, classify each quantity as to fundamental or…

A: to classify the different physical quantities as fundamental and derived quantities

Q: Differentiate the Seeback and the Peltier effect using a neat diagram.

A: Given Data : Seeback effect  Peltier effect

Q: Draw and label a schematic of a hollow cathode lamp. Describe each step of the light generation…

A: Solution: To Draw and label a schematic of a hollow cathode lamp.

Q: Explain what an insulator is?

A: A material which does not allow the passage of heat,light, electricity, sound through it is called…

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: Object Material Observation copper Light bulb lights up rubber Light bulb does not light up aluminum…

A: As per the given question ,     Copper  Light bulb light up  rubber Light bulb does not light…

Q: Distinguish between emissive power and spectral emissive power.

A: When any thermal radiation is radiated from a unit surface area, the rate at which it is radiated at…

Q: A body which absorbs or emits radiation ideally is referred to as a perfect ........ reflector…

A:

Q: With respect to the electromagnetic spectrum we can say that: Select one: a. None of the above is…

A: Given data we have to select one correct option from above statement.

Q: Visible light from a candle Is that conduction, convection, or radiation.

A: When a candle burns, it converts chemical energy of wax into light and heat energy. The visible…

Q: Assume that there are 20 luminaires that include 4×14W fluorescent lamps in your office. If you…

A:

Q: What are the terminals of an incandesant lamp

A: The major components of an incandescent bulb are filament, two terminals, glass.

Q: 16. From the list below, select ALL that are examples of radiation: O electromagnetic waves O light…

A: radiation is energy transferred from one location to another location without any medium.

Q: Wave your hand back and forth between your face and a fluorescent light bulb. Do you observe the…

A: If you wave your hand back and forth between your face and a fluorescent light, you will see a…

Q: What are the Safety and Importance of Electromagnetic Radiation

A:

Q: THE MOST HIGH INDICATORS OF THE COEFFICIENT OF NATURAL LIGHTING IN THE RESIDENTIAL PREMISES

A: ANS: 3. Same for the whole room

Q: Explain the principles involved in lighting and thunder (electricity)

A:

Q: An incandescent lightbulb is an inexpensive but highly inefficient device that converts electrical…

A: Given Data: The diameter of the light bulb is, D=10 cm The power of the light bulb is, P=100 W The…

Q: Radiation• Discuss heat transfer by radiation.• Explain the power of different materials.

A: As per guidelines, the first question has been answered. Radiation refers to phenomenon of transfer…

Q: Instruments for measuring Solar Radiation?   A) Ammeter B) Pyranometer C) Dynamometer D) Anemometer

A: An ammeter is an instrument for measuring the current, either direct or alternating current.   A…

Nuclear Reactions

Nuclear reactions are processes in which the fundamental characteristics of a nucleus changes. They change into a completely different nucleus. These processes occur naturally in an unstable nucleus. Bombarding an energetic particle can induce nuclear reactions.  In this article, both the naturally occurring nuclear reactions are termed as radioactive decay and the induced nuclear reactions are further categorized as nuclear fission and nuclear fusion.