Physics question and answers for November 07, 2023
- Q Two identical equi concave lenses made of glass of refractive index 1 5 placed in contact has power P When a liquid of refractive index is filled in the gap...
- Q shown A ray of light makes normal incidence on the diagonal face of a right angled prism as figure If 0 37 then the angle of deviation after second step...
- Q 7 The diameter of the pupil of human eye is about 2 mm Human eye is most sensitive to the wavelength of 555 nm The limit of resolution of human...
- Q 6 Why is the aperture of both the lenses in a microscope small OR short pulse of white light is incident from air to a glass slab at normal incidence...
- Q a 5 x 10 m c 2 x 10 m 2 5 x 10 d 10 x 10 m 41 In Young s double slit experiment light waves of wavelength...
- Q In the given figure the radius of curvature of curved surface for both the plano convex and plano concave lens is 10 cm 10 cm and refractive index for both...
- Q In concave mirror size of image depends upon a Size of object c Area covered by object b Position of object d Shape of object
- Q Topic wise 5 A rod of length 10 cm lies along the principal axis of a concave mirror of focal length 10 cm in such a way that its end...
- Q 8 The angle of a prism is A One of its refracting surfaces is silvered Light rays falling at an angle of incidence 2A on the first surface returns back...
- Q A converging beam of rays is incident on a diverging lens Having passed through the lens the rays intersect at a point 15 cm from the lens on the opposite...
- Q 50 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 Calculate the critical angle for a ray of light passing from glycerin to water Give your answer to 1 decimal place in the form 46 4 degrees
- Q 137 If the focal length of objective lens is increased then magnefying power of 2014 a microscope will increase but that of telescope decrease b microscope and telescope both will...
- Q If a ray of light parallel to principle axis incident on a concave mirror at angle of incidence 37 If reflected ray meets the principle axis at point B Find...
- Q c 2 1 J2 The magnifying power of a telescope is 9 When it is adjusted for parallel rays the distance between the objective and eyepiece is 20 cm The...
- Q 1 A ray of light is incident at an angle of incidence i on one face of prism of angle A assumed to be small and emerges normally from the...
- Q 18 A convex lens of focal length 25 cm produces images of the same magnification 2 when an object is kept at two positions x and X X X from...
- Q 2 A concave mirror of focal length fi is placed at a distance of d from a convex lens of focal length f A beam of light coming from infinity...
- Q 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 Sun...
- Q A convex lens and a concave lens each having same focal length of 25 cm are put in contact to form a combination of lenses The power in diopters of...
- Q 5 A ray of light travelling in a transparent medium of refractive index falls on a surface separating the medium from air at an angle of incidence of 45 For...
- Q 6 5 3 3 3 23 In the shown situation if middle portion of the lens is painted black then Object Lens 2F F 5 a complete image of the...
- Q c 1 2 x 10 m s d 1 8 10 m s 43 Two thin lenses of focal lengths f and f are in contact and coaxial The power...
- Q 8 A thin prism of angle 15 made of glass of mai refractive index 1 5 is combined with another prism of glass of refractive index 1 75 The xou...
- Q e of el 20 Critical angle for light going from medium i to ii is 8 The speed of light in medium i is v then the speed of light...
- Q 3 34 The radi of curvature of the surfaces of a double convex lens are 20 cm and 40 cm respectively and its focal length is 20 cm What is...
- Q An object is placed at 20 cm from a convex mirror of focal length 10 cm The image formed by the mirror is Question Type Single Correct Type 1 2...
- Q c 90 d 40 12 The apparent depth of a needle lying at the bottom of the tank which is filled with water of refractive index 1 33 to a...
- Q A light ray passes through the focus point of a convex lens and is then incident on the lens Which of the following figure depicts the correct path of light...
- Q A rod of glass u 1 5 and of square cross section is bent into the shape shown in the figure A parallel beam of light falls on the plane...
- Q a A converging lens of focal length of 12 cm and diverging mirror of focal length 7 5 cm are placed 5 cm apart If the final image is formed...
- Q A thin equiconvex glass lens of refractive index 1 5 has a power of 5D When the lens is immersed in a liquid of refractive index it acts as a...
- Q In the displacement method a convex lens is placed in between an object and a screen If the magnifications in the two positions are m and m2 and the displacement...
- Q Two illuminated point objects O and 02 are placed at a distance 24 cm from each other along the principal axis of a thin convex lens of focal length 9...
- Q A point like light source is placed to the symmetry axis of a hemisphere shaped piece of glass of radius 20 cm 10 cm away from the plane surface The...
- Q A plane mirror is placed at the bottom of a fish tank filled with water of refractive index The fish is at a height 10 cm above the plane mirror...
- Q A converging lens of focal length 30 cm and diverging lens of focal length 20 cm are kept 15 cm apart with their principal axes coinciding Where shall an object...
- Q A hemisphere of radius R and refractive index 2 is placed in a liquid of refractive index 3 as shown in figure A ray is incident at point P at...
- Q a concave lens of focal length f the relation between object and image distances u and v respectively from its pole can best be represented by u v is the...
- Q A luminous point object is moving along the principal axis of a concave mirror of focal length 12 cm towards it When its distance from the mirror is 20 cm...
- Q A ray of light is incident normally on face AB of a prism of refractive index 3 2 The largest value of angle 0 so that ray is totally reflected...
- Q A ray of light strikes a plane water air interface from within the water at an angle of incidence i Which one of the following statements is correct a If...
- Q A convex lens forms a real image on screen placed at distance of 60 cm from the object When lens is shifted towards screen by 20 cm another image of...
- Q An object is placed in front of a convex mirror of radius of curvature 20 cm Its image is formed 8 cm behind the mirror The object distance is O...
- Q Figure shows a ray of light passing through a prism If the refracted ray QR is parallel to the base BC show that i r r A 2 ii angle...
- Q A man cannot see clearly the objects beyond a distance of 20 cm from his eyes To see distant objects clearly he must use which kind of lenses and of...
- Q of light strikes a piece of transparent glass having cross section as shown in the figure below Correct shape of the emergent wavefront will be figures are schematic and not...
- Q View in English One face of a rectangular glass plate 6 cm thick is silvered An object held 8 cm in front of the first face forms an image 12...
- Q The objective and eye piece of an astronomical telescope are double convex lenses with refractive index 1 5 when the telescope is adjexted to infinity the separation between the lenses...
- Q If magnitude of dispersive power of two lens are 0 024 and 0 036 then focal length be for aberration free combination Question Type Single Correct Type 1 30 cm...
- Q 0 14 Hz d More information is required A lens held above a coin placed on a table forms an image of the coin After the lens is moved vertically...
- Q 40 cm What is the distance of the final image formed by this lens system 1 120 cm to the right of lens A 2 90 cm to the right...
- Q Which statement best describes the refraction of light When light enters a new medium at an angle it travels in a straight line through the medium without changing direction When...
- Q colors A ray of light is incident at an angle of incidence i on one face of a prism of angle A assumed to be small and emerges normally from...
- Q A cylindrical vessel whose diameter and height both are equal to 30 cm is placed on a horizontal surface and a small particle P is placed in it at a...
- Q A convex lens of focal length f 20 cm is placed in front of a plane mirror as shown in the figure 20 cm An object O is placed in...
- Q A cylindrical beam of light having a variable intensity 1 is incident on the curved surface of a fixed cone of base radius R Intensity of beam lor Conical surface...
- Q An object is placed in front of a convex mirror at a distance of 50 cm A plane mirror is introduced covering lower half of the mirror If the distance...
- Q Q 37 O When a point source of light is placed at a depth h inside a liquid of refractive index then the light rays come out of the surface...
- Q Two mirrors mounted vertically are made to move towards each other with a speed v m s each A particle that can bounce back between the two mirrors starts from...
- Q Two plane mirrors M M2 have their reflecting faces inclined at 0 Mirror M receives a ray AB reflects it at B and sends it as BC It is now...
- Q An object moves towards a concave lens with speed 5 mm s of focal length 20 cm Then what is image speed when object is at 30 cm from lens...
- Q 8 In a demonstration of dispersion without deviation phenomenon of thin prism combination a prism X is chosen with refracting angle 5 and refractive index 1 40 It is combined...
- Q A converging lens forms an image of an object on a screen The image is real and has twice the size of the object If the positions of the object...
- Q 1 325 K 2 375 K 3 300 K 4 350 K Focal length of a magnifying glass is 12 5 cm Ratio 20 of maximum and minimum magnifying power...
- Q A lens with a focal length of 18 cm is used to project an image onto a screen If the original object is 22 cm away from the lens how...
- Q A 8 B 5 C 10 D 12 O A square plate of sides 3 cm is placed at 20 cm from concave mirror The focal lengt of concave mirror...
- Q One night a person of height h 1 8m is standing on the bank of a straight canal On the opposite bank a lamp is installed at height H 5...
- Q A thin lens of focal length f is used as a magnifying glass Which of the following statements is true respectively about the type of lens and the distance d...
- Q A convex lens made of 5 different transparent materia is used to make an image of an object placed in front it The number of images formed will be H45...
- Q A 9 CM tall object placed 18 cm in front of a convex mirror of focal length fif the image formed is 3 times smaller than the object find out...
- Q An object is approaching a thin convex lens of focal length f with speed vo The magnitude of the rate of change of lateral magnification of image w r t...
- Q neet prep 29th Octob Cont 1 A spherical fishbowl of radius 15 cm is filled with water of refractive index A cat standing outside in air at a distance of...
- Q in n 12 Assertion The nature of the image of an object depends on the size of the mirror Reason It is not possible to obtain a real image by...
- Q Two plane mirror are inclined at an angle of 60 as shown in figure A ray of light incident on one mirror is parallel to the other What will be...
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