Physics question and answers for November 01, 2023
- Q 43 A telescope with objective of focal length 60 cm and eye piece of focal length 5 cm is focused on a far distance object such that the parallel rays...
- Q A ray of light incident on a glass sphere refractive index 3 suffers total internal reflection before emerging out exactly parallel to the incident ray The angle of incidence was...
- Q Two identical glass g 3 2 equi convex lenses of focal length f each are kept in contact The space between the two lenses is filled with water w 4...
- Q In an experiment for determination of refractive index of glass of a prism by i 8 plot it was found that a ray incident at angle 35 suffers a deviation...
- Q D A biconvex lens has a radius of curvature of magnitude 20 cm Which one of the following options describe best the image formed of an object of height 2...
- Q 32 If R and R are the radii of curvature of the spherical surfaces of a thin lens and R R then this lens can R R 1 Correct myopia...
- Q White light may be considered to be a mixture of waves of ranging between 3900 and 7800 An oil film of thickness 10 000 A is examined normally by the...
- Q A ray of light travelling in a transparent medium of refractive index u falls on a surface separating the medium from air at an angle of incidence 45 For which...
- Q 32 The output of gate is low when at least one of its input is high This is true for 1 NOR 2 OR 3 AND 4 NAND 3
- Q A thick mirror forms multiple image Which image is brightest 1 First image 2 Second image 3 Third image A All
- Q 3 A prism can produce a minimum deviation 8 in a light beam If three such prisms are combined the minimum deviation that can be produced in this beam is...
- Q A short linear object of length L lies on the axis of a spherical mirror of focal length fat a distance u from the mirror Its image has an axial...
- Q 3 White light consists of wavelengths from 400 nm to 700 nm What will be the wavelength range seen when white light is passed through glass of refractive index 1...
- Q transmitted light Find the light For the combination of one prism and 2 lenses shown in figure find the size of the final image in mm when the object length...
- Q 7 When a biconvex lens of glass having refractive index 1 47 is dipped in a liquid it acts as a plane sheet of glass This implies that the liquid...
- Q An object is placed in front of two convex lenses one by one at a distance u from the lens The focal lengths of the lenses are 30 cm and...
- Q 13 How far should an object be from a concave spherical c inversely proportional to x image one ninth its size by about 14 As the position of an object...
- Q A parallel beam of light in incident on a liquid surface such that the wave front makes an angle 30 with the surface and has a width of 3 m...
- Q 32 A person who can see distinctly from a distance of 1 5 m wants to read a book placed at a distance of 25 cm Power of the required...
- Q 41 Focal length of objective eye piece and inverting lens of a terrestrial telescope are 20 cm 10 cm and 5 cm respectively Length of the tube containing these lenses...
- Q 4 1 6 133 The focal length of a biconvex lens is 20 cm Duand its refractive index is 1 5 If the radii of ubt curvatures of two surfaces...
- Q 15 In a vertically placed container filled with water a small light source is at bottom What would be the speed in m s of the image of the light...
- Q 1 3 given ray as condition of total internal reflection of this ray the required refractive index of prism will be 3 1 2 13 45 incident ray 2 4...
- Q In a compound microscope focal length of objective and eyepiece lens is 4 cm and 8cm respectively If length of tube is 30 cm then magnifying power for normal adjustment...
- Q When a bright source is placed 30 cm in front of a lens there is an erect image 7 5 cm from the lens There is also of faint inverted...
- Q Images formed by an object placed between tw plane mirrors whose reflecting surfaces make a angle of 90 with one another lie on a 1 Straight line 2 Parabola 3...
- Q greater than critical angle 44 Due ot a vertical temperature gradient in the atmosphere the index of refraction varies Suppose index of refraction varies 11 0 as n no 1...
- Q Light is incident at an angle a on one planar end of a transparent cylindrical rod of refractive index 1 Determine the least value of n so that the light...
- Q 150 The ex of a lens material is and focal length f Due to some chemical changes in the material its refractive index has increased by 2 The percentage decrease...
- Q Focal length of objective of a compound microscope is 4mm and image is formed at a distance of 224 mm from it If angular magnification is 550 then focal length...
- Q A cubical vessel has opaque walls An observer dark circle in figure below is located such that she can see only the wall CD but not the bottom Nearly to...
- Q 4 An equiconvex lens of glass of refractive index 1 5 is immersed in a liquid of refractive index 1 6 If the radius of curvature of each surface is...
- Q For a normal eye the cornea of eye provides a converging power of 40 D and the least converging power of the eye lens behind the cornea is 20 D...
- Q PTICAL INSTRUEMENT 02 A vessel is half filled with a liquid of refractive index u The other half of the vessel is filled with an immiscible liquid of refractive index...
- Q A fish looking up through the water sees the outside world contained in a circular horizon 4 If the refractive index of water is and the 3 fish is 12...
- Q is fixed to the ceiling Abulb is to 20 cm be placed on the axis of the mirror A circular area of radius R 1 m on the floor be...
- Q In a compound microscope the focal length of objective lens is 1 2cm and focal length of eyepiece is 3 0cm When the object is kept at 1 25cm in...
- Q 56 A ray of light refracts from medium 1 into a thin layer of medium 2 crosses the layer and is incident at the critical angle on the interface between...
- Q An object is placed at a distance of 15cm from a convex lens of focal length 10cm Find the distance at which a convex mirror of focal length 10cm should...
- Q 2 A biconvex lens has a radius of curvature of magnitude 20 cm Which one of the following Options deseribe best the image formed of an object of height 2...
- Q Mirror in the arrangement shown in figure is moving up with speed 4 cm sec Find the speed of final ima 16JP12 object O in cm s formed after two...
- Q The principal section of a glass prism is an isosceles triangle ABC with AB AC The face AC is silvered A ray of light is incident normally on the face...
- Q 2 A concave mirror of focal length f produces a real image times the size of the object The distance of the object from the mirror is
- Q As shown in figure a liquid of refractive index n is poured onto the concave surface of concavo convex lens R and R are the radii of curvature of convex...
- Q A beam of light from a source L is incident normally on a plane mirror fixed at a certain distance x from the source The beam is reflected back as...
- Q A light ray is incident on a rotating mirror which is rotating with angular speed 3 rad s as shown in figure The speed of bright spot on the wall...
- Q 13 1 u of mass 931 5 MeV of energy HD Question 25 O 65 55 75 0 35 90 Mirror A You have a children s toy part of...
- Q Alens has one concave surface of R 2 m an convex surface with R 3 m then focal length lens is If u 1 5 1 12 m 3 24...
- Q A light ray traveling through the air strikes a uniformly thick piece of plexiglass n 1 51 at an angle of 45 0 to the normal and then exits on...
- Q A convergent lens forms a real image 0 78 times the size of the object The object dis tance is 184 cm P h Scale 10 cm Find the distance...
- Q Coherent light of frequency 6 32x10 Hz passes through two thin slits and falls on a screen 81 0 cm away You observe that the third bright fringe occurs at...
- Q What are three behaviors of light that cause it to be thought of as a wave
- Q A convergent lens forms a real image 1 36 times the size of the object The object dis tance is 17 9 cm h 9 Scale 10 cm H Find...
- Q 5 Make a ray diagram to locate the image of the paramecium or hairy ear The mutant paramecium is 1 0 cm tall and placed 3 0 cm from a...
- Q from flint glass to water If the incident angle is 22 find light with a wavelegth of 700x10 m and a speed a speed after refraction b wavelength after refraction...
- Q Light traveling through air strikes the boundary of some transparent material The incident light is at angle of 14 degrees relative to the normal The angle of refraction is 25...
- Q 1 Monochromatic light passes between 2 media If the angle in medium 1 is 45 and the angle in medium 2 is 30 calculate the ratio of light speeds between...
- Q A divergent lens forms a virtual image 0 73 times the size of the object The distance between object and image is 15 cm f h Pq h Scale 10...
- Q object is 30 cm in front of a converging of focal length 10 cm The image is 01 real and smaller than the object O2 real and larger than the...
- Q A divergent lens forms a virtual image 0 68 times the size of the object The object dis tance is 11 5 cm h P 9 h Scale 10 cm...
- Q A convergent lens has a focal length of 9 4 cm The object distance is 20 4 cm P h f Scale 10 cm Find the distance of the image...
- Q 004 part 1 of 2 10 0 points A convergent lens has a focal length of 9 4 cm The object distance is 20 4 cm SEFFEFFFFFFFFE Scale 10 cm...
- Q A light beam in air enters a transparent material at an angle of 38 00 degrees with respect to the normal After refraction it makes an angle of 14 76...
- Q Consider the lens shown at the right An object is placed at a position beyond the 2F position left of 2F 2F F Select one O a between the focal...
- Q O they are virtual because they are projected onto a screen Othey are real because they are reflected off of a mirror
- Q An object is placed 10 9 cm in front of a convex lens A virtual image is produced at 46 8 cm behind the lens What is the focal length...
- Q water n 1 33 O sapphire n 1 77 glass n 1 52
- Q What happens when an object is place exactly at the focal length of a convex lens Choose all that apply O no image is produced an image appears on top...
- Q If the angle of incidence is 74 what is the angle of reflection Do not add units to your answer
- Q An object is placed 3 6 cm in front of a convex lens with a focal length of 4 5 cm Which of the following best describes the image produced...
- Q Problem 8 An object is 30 cm in front of a concave spherical mirror that has a focal length of 10 cm a What are the image distance q and...
- Q Light is not refracted when it is Select one O a traveling from air into a glass of water at an angle of 35 to the norma O b traveling...
- Q All of the following images can be formed by a converging lens except which one Select one O a real upright and magnified O b real inverted diminished O c...
- Q The diagram below shows an incident ray approaching a lens Upon striking the lens this ray will Select one 2F F a refract and pass through point F b refract...
- Q A X Select one O a B O b A B Which letter in the diagram below represents the virtual image of object X
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