Physics question and answers for October 22, 2023
- Q A bulb is located on a wall Its image is to be obtained on a parallel wall with the help of a convex lens If the distance between the two...
- Q The star Betelgeuse has a surface temperature of 3000 K and is 600 times the diameter of our sun Diameter of sun is 7 x 10 km Assume that it...
- Q 37 In Young s double slit experiment the separation between the slits is 42 is the wavelength of the light used The maximum number of maxima formed on the screen...
- Q 10 In a double slit experiment the two slits are 1 mm apart and the screen is placed 1 m away A monochromatic light of wavelength 500 nm is used...
- Q 8 35 our tion not 21 light 3 T I R of light An object is immersed in a fluid In order that the object becomes invisible it should 4...
- Q 5 Two coherenet sources are 0 18 mm apart and the fringes are abserved on a screen 80 cm away It is found that with a certain monochromatic source of...
- Q In single slit diffraction experiment if slit width is made double of original then intensity increases 1 Two times 2 Four times 3 Eight times 4 Sixteen times
- Q 20 In a single slit diffraction experiment first minimum for red light 660 nm coincides with first maxima of Then 1 3300 A 3 4400 A 2 6600 A 4...
- Q In given arrangement there are two thin lens are arranged as shown in the figure The separation between them is 2f where fis focal length for each lens x coordinate...
- Q 9 A slit 5 cm wide is irradiated normally with micro waves of wavelength 1 cm Then the angular spread of the central maximum on either side of the incident...
- Q 2004 The maximum number of possible interference maxima for slit separation equal to twice the wavelength in Young s double slit experiment is b five a infinite c three d...
- Q Which of following nature of light waves is supported by the phenomenon of interference 1 longitudinal 2 transverse 3 both transverse and longitudinal 4 None of the above ENG 02...
- Q Th Pre Medical Physics In Young s double slit experiment one of the slits is so painted that intensity of light emitted from it is half of that of the...
- Q The incident intensity on a horizontal surface at sea level from sun is about 2000 W m Assuming that half of this intensity is reflected and half is absorbed the...
- Q If diffraction occurs through a single slit then intensity of first secondary maxima become of central maxima 3 75 Z 1 4 2 25 4 50
- Q 9 In YDSE d 0 8 mm 7200 and D 2 m The minimum distance from central maximum a which the average intensity is 50 of the maximum is 1...
- Q MP 30 MI YA Magnification of a compound microscope is 30 Focal length of eye piece is 5 cm and the image is form at least distance of distinct vision...
- Q 1 In a Young s double slit experiment separation between the slits is 2 x 103 m and distance of the screen from the slit is 2 5 m Light...
- Q wo narrow slits are 0 27 mm apart The 5th order dark fringe is 0 9 from the central bright fringe What is the wavelength of the light
- Q A parall beam of light of intensity I is incident normally on a plane surface A which absorbs 50 of the incident light The reflected light falls on B which...
- Q Plane wavefronts are incident on a as shown The reflected wavefronts will be D 1 3 4
- Q In double slit experiment the angular width of the fringes is 0 20 for the sodium light 2 5890A In order to increase the angular width of the fringes by...
- Q 58 A boy is trying to start a fire by focusing Sunlight on a piece of paper using an equiconvex lens of focal length 10 cm The diameter of the...
- Q The ionosphere bends the E M waves having the frequencies 1 less than 40 MHz 3 nothing is certain 2 beyond 40 MHz 4 depends on the moisture present
- Q A narrow steel rod of length L is rigidly clamped at its mid point and transverse standing waves of frequenc f are set up in it by touching the prong...
- Q 1 75 kg particle moves as a function of time as follows x 3 3cos 3 7t 1 3 where distance is measured in meters and time in seconds Find...
- Q Question 1 of 10 What are two ways in which ultrasound technology produces images A By measuring the time it takes for reflected sound waves to be detected B By...
- Q A 6 3 m long string has a mass of 2 15g What is the mass in kg of an object hung from its end if a 195 Hz wave...
- Q Refraction is caused when parts of the wave fronts travel at different speeds Select one True O False
- Q Who first separated white light into colors Isaac Newton Galileo Albert Einstein
- Q 5 An angle of incidence of 20 in water results in an angle of refraction of 15 a Is the second medium more of less optically dense than the first...
- Q Substances that absorb light are called pigments Different pigments show maximum absorption of light at different wavelengths reflecting the unabsorbed wavelengths Varying forms of chlorophyll in plants lead to a...
- Q Question 21 Which of the following statements is true of the electromagnetic spectr O Our eyes can see visible light x rays ultraviolet and gamma rays O Visible light is...
- Q White light falls normally on a transmission grating that contains N 9176 lines The grating has a width w 0 0113 m a 1 point Which formula can be used...
- Q 5 In each diagram In each diagram tell which way the missing ray will bend towards or away from the normal Medium 1 is more optically dense Medium 1 Medium...
- Q 10 Certain relationships should clearly show in all of your wavefront diagrams a How does the incident frequency compare to the refracted frequency How do you know b How does...
- Q 2 Collate d Name Table1 Image and Object Distances de m Distance from do m light source to screen m 0 36m Silk 0 50 o ile silla 13m I...
- Q 02010 Pearson Education inc A light shines through a fish tank What is the angle of refraction if the incident ray from the glass is 45 Sin 02 1 sin...
- Q 0 2015 Pan Edication inc n sin 0 n sin 0 Snell s law for refraction between two media 18 2 A light shines through a fish tank What is...
- Q 11 What is the minimum thickness of an oil film on a surface of water which will appear black if illuminated from air with light of 5 0x10 4 Hz...
- Q In a standard Young s double slit experiment a thin layer of air of thickness t2 is enclosed in a hollow squarish transparent container of wall thickness t as shown...
- Q A loudspeaker is producing a single frequency of sound waves a pure tone at 198 Hz If a second loudspeaker is placed nearby and it produces sound waves at 202...
- Q Radiowave Microwave Infrared wave X ray UV light Gamma rays Visible light Infrared wave UV light Gamma Rays UV light Radiowave Microwave Radiowave X ray Question 19 Imagine that you...
- Q What is the speed of a proton with a de Broglie wavelength of 0 17 nm Express your answer in meters per second V AEO
- Q a lens affects the distance and magnification of images 22 4 They have been tasked with determining the focal lengths and image magnification for two lenses using their optical bench...
- Q What is the wavelength in nm of a photon with energy 0 30 eV2 Express your answer in nanometers 4100 nm Submit Previous Answers Correct Part B Is this wavelength...
- Q 33 Problem 3 Suppose polarized light passes through a polarizing Randomized Variables 0 19 5 A To what percent of its original value is the intensity of the polarized light...
- Q Required information Light of 650 0 nm is incident on two slits A maximum is seen at an angle of 4 10 and the next minimum at 5 12 hat...
- Q 33 Randomized Variables 0 19 5 To what percent of its original value is the intensity of the polarized light reduced 1 10 sin cos cotan asin atan acotan cosh...
- Q 5 8 The energy of a photon varies 3 inversely with frequency 4 inversely with the square of frequency Proof Use the equation and a graph or a sample calculation...
- Q 3 The hydrogen spectrum produces a red line with wavelength of 656 x 10 9 m and a violet line with wavelength 434 x 109 m What is the first...
- Q A prism of prism angle 90 and refractive index 2 is kept in air as shown O What should be angle of incidence so that ray will come out of...
- Q Required information A laser has a wavelength of 581 nm A grating and a lens are used to split the beam into three parallel beams spaced 1 85 cm apart...
- Q 36 Monochromatic light from a distant source is incident on a slit 0 850 mm wide On a screen 4 50 m away the distance from the central maximum of...
- Q 2 Define the focal length of a concave mirror Draw a diagram to illustrate your definition
- Q In order for two identical waves to completely cancel each other out they must be exactly one half wavelength out of phase O True False
- Q 1 How far from above the center point of the screen will the first mimimum be when red light with a wavelength of 7 0 x 10 m that passes...
- Q wares Physics to talk about Describe your example E have rete comments and educate MOUC
- Q 1 00 into the gem at an incident angle of 45 and measures the angle of refraction to be 19 2 Based on this information is the ring real diamond...
- Q Based on the diagram describe S A L T this image Enlarged Same Size Erect Located between F and 2F Located in front of the lens Inverted Virtual
- Q When ultraviolet light with a wavelength of 400 nm alls on a certain metal surface the maximum kinetic energy of the emitted photoelectrons is 1 10 eV Part A What...
- Q A demonstration of interference is done in class A Slinky is stretched out from end to end Three cups are placed on the ground positioned just to the side of...
- Q A diffraction grating produces a second order maximum for red light 650 nm at an angle of 37 5 How many lines per cm does the grating have Select one...
- Q A single slit diffraction set up has a slit of width 8 37 x 10 6 m and is illuminated by light of wavelength 484 0 nm The screen showing...
- Q A double slit experiment is illuminated by light of wavelength 520 nm The m 3 bright fringe is found to be at an angle of 53 0 What is the...
- Q Due Monday April 25th Note first order maximum means m 1 as opposed to the central maximum m 0 1 How many lines per centimeter are there on a diffraction...
- Q 1 point At what angle will light bend to if it is traveling from Air refractive index 1 00 at an angle of 60 degrees from the normal and it...
- Q 7 What is the frequency of a light wave with a wavelength of 10000 m 10 points
- Q ar WP P 4 Based on your understanding of interference and diffraction explain why you think intensity profile of a double slit follows the pattern shown in the figure below...
- Q If an X ray has a wavelength of 5 nm what is its frequency Answer in units of Hz Answer in units of Hz
- Q 2 At what angle is the first order maximum for 450 nm wavelength blue light falling on double slits separated by 0 0500 mm
- Q A single-slit with a width of 23.2 ?m is used to create a pattern on a screen 1.5 maway. Find the angular separation between the two third-order bright fringes (away...
- Q You have a polarizer at 90, followed by another at 0 and a third at 45 How much light is blocked?A. 100B. 25C. 75D. 50
- Q Wave Superposition/Interference: Use the principle of wave superposition to explain how a propagated wave with a fixed amplitude may increase in amplitude AND decrease in amplitude. Relate this principle to...
- Q Consider the following properties of light: I. rectilinear propagationII. ReflectionIII. RefractionIV. diffractionV. partial reflection-refractionWhich of these properties did Huygens have trouble explaining with his theory of light?a. I onlyb. IV...
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