ie is initially at 30.0

Q: 5a R: = 102 R2 (25v (75v) V = R2 =

A: Given data:  Battery voltage (V) = 75 V V2 = 25 V R1 = 10 Ω current (I) = 5A

Q: A sodium lamp emits light with a wavelength of 6x10 raised to -7 m. Find the frequency of the light

A: Frequency of light is : 0.5 * 10^15 Hz

Q: A candle is placed 22 c produced 53 cm from t

A: Magnification = - v/u

Q: WHEN ASSESSING NATURAL LIGHTING, THE MOST OBJECTIVE INDICATOR (METHOD)

A: ANS: 1. light coefficient

Q: What is the speed of light in a precious stone that has an index of refraction of 2.7980? m/s

A: CONCEPT: Refractive index is defined as the ratio of speed of light in air medium to the speed of…

Q: What is the range of frequencies that encompass of Infrared waves

A: To find:  The range of frequencies that encompass of infrared waves.

Q: A certain radio wave has a wavelength of 7 inches. a. Convert the wavelength of this radio wave into…

A: Given Wavelength of the radio wave is given as λ=7 inches

Q: What is the speed of light in a vacuum?

A: Introduction: Speed of light in vacuum: Speed of light in a vacuum is defined to be exactly…

Q: | (mm) R (mm) B(0) (mT) Measured Calculated 75 160 13 3.55 150 160 13 7.00 300 160 13 14.2

A: B(0) Draw B (measured values)- n curve for current 1A. given, table Values of no. of turns per unit…

Q: A certain laser emits light of wavelength 6.33 x 10-7 m. What is the frequency of this light in a…

A:

Q: Determine the electric filed intensity at r = 15m.

A:

Q: a. emits green light. b. absorbs green light. C. transmits green light. d. reflects green light.

A: d) Apple is green because it REFLECTS GREEN LIGHTS ( and absorb all other lights)

Q: If the energy received by 7 minutes is 4690KJ. 5 m² area in Calculate the value of Solar constant ?

A:

Q: A 125° 1000 dyn 500 dyn

A: FBD equations for 1000 dyn block:- Angle between TA and vertical=  90-65 = 25° Angle between TB and…

Q: The wavelength an electromagnetic wave is 215nm in water with n=1.33, find its frequency.

A: Calculate the velocity of the electromagnetic wave in water.

Q: What is the range of visible light?

A: range of visible light

Q: How fast would light travel through a material with a dielectric constant of 6 and a relative…

A:

Q: Compute the frequency (in MHz) of an EM wave with a wavelength of 4.0 in. (0.1016 m).

A: The speed of the EM waves is the same as the speed of the light that is 3×108 m/s.

Q: What type of electromagnetic radiation is used in the remote control of a television? A) Ultraviolet…

A: We have to mention the type of electromagnetic radiation is used in the remote control of a…

Q: at can pass through the face in relation to the ele

A:

Q: Explain how light can be a self-sustaining wave based on what you know of laws of electromagnetism.

A: Answer An electromagnetic wave can travel through anything they actually needs no medium to…

Q: nce of 10002 and two lamps L1 an

A: 0.056 watts

Q: Which of the following are one of the special rays used in ray tracing?

A: 1. When the ray passes through centre of lens then it remains undeviated. 2. Ray parallel to optic…

Q: 104 3 立月 c) 32G mys

A: (i) kg/m3 to g/cm3             Given value = 1040 kg/m3 Conversion factors :             1 kg = 1000…

Q: The sun is 146.9 x 106 km from the Earth.  How long does it take sun light to reach the Earth?

A: Write the expression for time taken by light to travel a distance

Q: The inner most layer of an optical fiber is called Select one: O a. cable jacket O b. coating core O…

A: We know that, optical fibre is made of of 3 layers  Innermost layer- core  Middle layer- cladding…

Q: Which of the following can be used as variable сарасitors?

A: In this question we have to answer which capacitors act as variable capacitors. Please give positive…

Q: Which of the following colors of visible light has the longest wavelength? Is it: a. green b. yellow

A:

Q: A 100-W tungsten-filament lamp has a luminous efficiency of 16 lm/W. Find its intensity

A: Given data: Power rating of lamp is, P=100 W. Luminous efficiency is, ηLE=16 lm/W.

Q: find the illumination 4.00 m below a 405 lm lamp

A: Power of lamp P=405 lm Distance d=4 m

Q: What is the frequency of infrared light that travels at 850 nm

A: Infrared light is an electromagnetic wave which travels with speed of light i.e 3*10^8 m/s. ∴…

Q: The minimum illumination recommended for reading is а. 800 W b. 800 Ix С. 800 cd d. 800 lu

A: Reading requires good illumination .For reading minimum average illuminance should be 500 lx.

Q: A ray of light is incident from air to water at 50ᵒ. Find

A:

Q: If the energy received by 3 m2 area in 450 seconds is 4280KJ. Find the value of Solar constant ?

A: Given data :                                 Area     =     A                                  Time…

Q: Sketch iR and Vo for the output network shown:

A: As Si diodes are given:VF = 0.7VThat is when the potential difference between there terminals is…

Q: 18. What is the luminance of a surface having a 42% reflectance and a 1.95 foot candle illumination?…

A: General formula for the luminance of a surface that is viewed perpendicular to the surface and…

Q: A certain radar installation that is used to track airplanes transmits electromagnetic radiation…

A:

Q: you can see from the Cos50 0.996)

A: Radial acceleration  is the centripetal Acceleration = v2 /r

Q: Light with a wavelength of 500 nm

A: Here  λ = wavelength = 500 X 10-9 d = distance between slits = 20 X 10-6 D = distance of screen from…

Q: A soduim lamp emits light with a wave length of 6x10-7m find the frequency of the light

A: Given: A soduim lamp emits light with a wavelength λ=6x10-7m To find the frequency of the light.