Physics question and answers for November 02, 2023
- Q 1 A prism of material refractive index u has refracting angle A For which of the following conditions there will be no emergent light whatever may be the angle of...
- Q Q 5 Find the focal length of a convex mirror whose radius of curvature is 32 cm
- Q 17 X Class Focal length of a spherical mirror is f and object placed at unit distance gives you magnification as m Then which of following is correct A D...
- Q A green light is incident from the water to the air water interface at the critical angle 0 Select the correct JEE Mains 2014 statement a The entire spectrum of...
- Q 0 The magnification m image distance v focal length f and object distance u of a spherical mirror can be related as A m f v f B m f...
- Q A telescope has an objective lens of focal length 200 cm and an eye piece with focal length 2cm If this telescope is used to see a 50 meter tall...
- Q An air bubble in glass 1 5 is situated at a distance of 3 cm from a spherical surface of diameter 10 cm as shown in figure At what distance...
- Q 46 A rod of glass m 1 5 and of square cross section is bent into the shape shown in the figure A parallel beam of light falls o plane...
- Q A plane mirror makes an between the mirror and the reflected ray Figure shows the plane top view of a cubical room with the wall CD as a plane mirre...
- Q 1 1 4 3 2 2 A plane mirror is placed horizontally on level ground at a distance of 60 m from the foot of a tower from the top...
- Q There are three optical media 1 2 and 3 with their refractive indices u H2 3 Then A when a ray of light travels from 3 to 1 no TIR...
- Q the position magnification and natur A motor car is fitted with a rear view mirror of focal length 20 cm A second rotor car 2 m broad and 21 6...
- Q 6 A ray of light falls on the surface of a spherica glass sphere making an angle a with the norma and is refracted in the medium at an angle...
- Q A plane mirror of length 8 cm is with speed 3 m s towards a wall in situation as shown in figure A source of light S gives narrow and...
- Q 0 8 9 Answer Q 8 Q 9 and Q 10 by appropriately matching the information given in following table For convex lens focus distance is given by Relation f...
- Q refracting acute angle of biprism is The a 179 b 1 c 1 2 d 90
- Q The power of spectacles lens required for a is 5 dioptre when separation between spe and eye is 2 cm What will be the power of lens required by him...
- Q 3 A light is travelling from air into a medium Velocity of light in a medium is reduced to 0 75 times the velocity in air Assume that angle of...
- Q An optical fibre consists of core of n surrounded by a cladding of n2 ni A beam of light enters from air at an angle a with axis of fibre...
- Q 2 Two mirrors are inclined at an angle 0 as shown in the figure Light ray is incident parallel to one of the mirrors Light will start retracing its path...
- Q An isoceles glass prism stands with its horizontal base in water as shown in the figure An incident ray of light above and parallel to the liquid surface and perpendicular...
- Q 0 Question 3 O 60 O 34 In the figure the second angle of incidence Zis 24 190 r O 19 60 90 1 Take the refractive index of the...
- Q A concave mirror of focal length f is placed at a distance of d from a convex lens of focal length f A beam of light coming from infinity and...
- Q A compound microscope having f 7 mm f 20 mm and distance between the lenses is 20 cm If image is formed at least distance of distinct vision then magnifying...
- Q A 4L u B u In the figure shown a thin parallel beam of light is incident on a plane mirror m at small angle 0 m is a concave...
- Q 6 A thin lens is made in the shape of a disc of thickness d and radius R The refractive index u of material of disc varies with distance r...
- Q 1 A far sighted person can see object beyond 49 cm clearly If separation between glasses and eye lens is 1 cm then find focal length of glass 1 30...
- Q 57 The right angled prisms of retr indices and are fitted together as shown in the fig 2 67 If a ray passes through the prisms without suffering any devaiation...
- Q A transparent slab of thickness d has a refractive index n z that increases with z Here z is the vertical distance inside the slab measured from the top The...
- Q Solution i Radius of curved surface of a plano convex lens is 20 cm and refractive index of lens material is 1 5 Calculate equivalent focal length of lens if...
- Q At what two distances could you place an object from a 45 cm focal length concave mirror to get an image 1 5 times the object s size
- Q 4 mirror with the Figure sh equation of a section on the XY plane a y 4ax A light ray parallel to the X axis is incident on the mirror...
- Q 1 You are asked to design a shaving mirror assuming that a person keeps it 10 cm from his face and views the magnified image of the face at the...
- Q Q 4 Which factors determine the focal length of a lens Ans The focal length of a lens depends on i radii of curvature of the surfaces of the lens...
- Q III MATCH THE COLUMN A small particle is placed at the pole of a concave mirror and then moved along the principal axis to a large distance During the motion...
- Q 26 A concave mirror and a converging lens glass with 1 5 both have a focal length of 3 cm when in air When they are in water 3x2x4 3x3...
- Q 1 The refractive indices for violet and red colour are 1 54 and 1 52 respectively the angular dispersion of a prism of angle 20 and made of such glass...
- Q A convex lens of focal length 15 cm is split into two halves and the two halves are placed at separation of 120 cm Between the two halves of convex...
- Q Light enters at an angle of incidence transparent rod of refractive index n For what value of the refractive index of the material of the rod the light once entered...
- Q 18 3 equal to that of glass 4 less than one AIPMT Mains 2012 A rod of length 10 cm lies along the principal a of a concave mirror of...
- Q 8 An achromatic convergent doublet of two lenses in contact has a power of 2D The convex lens has a power 5D What is the ratio of the dispersive powers...
- Q The refractive index of glass is Ifa ray of light 2 travels 9 cm in glass medium find the distance it travels in air during the same time 2 1...
- Q Two identical thin plano convex glass lenses refractive index 1 5 each having radius of curvature of 20 cm are placed with their convex surfaces in contact at the centre...
- Q For which of the following angle between two plane mirrors the incident ray and reflected ray from t are parallel to each other for all angle of incidence 1 30...
- Q 59 A real image is formed by a convex lens when it is cemented with a concave lens again the real image is formed The real image 1 shifts towards...
- Q Four identical lenses are kept one beside the other on the same optical axis as shown in the figure The right surface of rightmost lens is silvered Focal length of...
- Q 18 An object moving at a speed of 5m s towards a concave mirror of focal length f 1m is at a distance of 9m The average speed of the...
- Q An object is moving of water with a speed of 2 ms 1 and fish F is moving towards the surface with a speed of 5 ms 1 Find the...
- Q An air bubble is inside the water water Which of the following is correct 1 It will behave like a divergent lens 2 It cannot form a real image of...
- Q A parallel beam of light enters a convex lens of focal length 50 cm A concave lens of focal length 20 cm is kept coaxially at a distance D behind...
- Q of uniform thickness and refractive index n 1 4 is coated on convex spherical surface of radius R at one end of a long solid glass cylinder of refractive index...
- Q An equiconvex lens of glass of focal length 0 1 m is cut along a plane perpendicular to principal axis into two equal parts The focal lengths of new lenses...
- Q If the angle of deviation by a plane mirror is 120 for a ray incident on it then the angle made by the incident ray with the mirror is 1...
- Q An equi convex lens whose focal length in air is 20cm is made up of a material whose refractive index is 1 5 If one of its surface is silvered...
- Q A light beam is traveling from Region I to Region IV Refer Figure The refractive index in no no Regions I II III and IV are no 6 and no...
- Q index 1 50 Figure contact with a liquid layer on top of a plane mirror A small needle inverted image is found at the position of the needle The distance...
- Q 15 A small object is placed 20 cm in front of a block of glass 10 cm thick and its farther side silvered The image is formed 22 cm behind...
- Q A luminous point object is placed at O whose image is formed at I as shown in figure Line AB is optic axis Which of the following statements are correct...
- Q The radius of curvature of spherical surfaces of a convex lens are 15 cm and 10 cm respectively If Refractive Index of lens is 1 5 then find its focal...
- Q The refractive index of material of a convex lens is changing with time as 1 x sin oot At 0 the focal length of the lens is f and Ho...
- Q A flat mirror M is arranged parallel to a wall W at a distance L from it as shown in the figure The light produced by a point source S...
- Q The minimum required size of plane mirror to visualize complete image of an object is 1 Half of size of object 2 Is same as size of object 3 Depends...
- Q s source 1m 4 A container is filled with water 3 upto height 1m Find out diameter of disc at top of water surface from which light is coming out...
- Q The angle of a prism is A One of its refracting surface is silvered Light rays falling at an angle of incidence 2A on the first surface returns back through...
- Q 59 A plano convex lenx u 1 5 has radius of curvature 10 cm It is silvered on its plane surface Find focal length after silvering 1 10 cm 2...
- Q Monochromatic light is incident on a glass prism of angle A If the refractive index of the material of the prism is u a ray incident at an angle 0...
- Q A point source of light is place 4 m below the surface of water of refractive index 5 3 The minimum diameter of a disc which should be placed over...
- Q An air bubble in a glass slab with refractive index 1 5 near normal incidence is 5 cm deep when viewed from one surface and 3 cm deep when viewed...
- Q A bi convex lens is formed with two thin plan convex lenses as shown in the figure Refract index n of the first lens is 1 5 and that of...
- Q 0 How many images will be formed if two mirrors are fitted on adjacent walls and one mirror on roof JMI 2001 AFMC 2002 a 2 c 7 b 5...
- Q cylindrical rod has a refractive index of 2 3 It is surrounded by air A light ray is incident at the midpoint of one end of the rod as shown...
- Q 5 A spherical surface of radius of curvature R separates air refractive index 1 0 from glass refractive index 1 5 The centre of curvature is in glass A point...
- Q Two tree are at distance of 3 14 m from each other What should the maximum distance of an observer from tree to see them separately 1 21 6 km...
- Q 27 at a distance of 60 m from the front of a tower the top of the tower and its image in the mirror subtend an angle of 90 at...
- Q represents the refractive index when a light ray goes medium i to medium j then the product 21 X 32 X 43 is equal to a l 32 1 If...
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