Physics question and answers for November 04, 2023
- Q A parallel beam of rays of width 20 cm passing through a glass slab makes an angle 60 with its plane surface If the beam emerges into air from this...
- Q 3 Young s double slit experiment is performed with light of wavelength 5000 A If a glass plate of thickness 1 um and refractive index 1 5 is kept in...
- Q Two plane mirrors AB and AC are inclined at an angle 0 20 A ray of light starting from point P is incident at point Q on the mirror AB...
- Q A ray of light falls on a plane mirror When the mirror is turned about an axis at right angle to the plane of the mirror through 300 the angle...
- Q Complete the following ray diagrams after taking reflection from the second mirror with the angle of incidence and angle of reflection mentioned for each reflection of light Fin the net...
- Q When a ray is refracted from one medium to another the wavelength changes from 6000 to 4000 The critical angle for the interface will be Question Type Single Correct Type...
- Q 9 In the Young s double slit experiment apparatus shown in figure the ratio of maximum to minimum intensity on the screen is 9 The wavelength of light used is...
- Q A clear transparent glass sphere 1 5 of radius R is immersed in a liquid of refractive index 1 25 A parallel beam of light incident on it will converge...
- Q An electromagnetic wave of frequency v 3 0 MHz passes from vacuum into a dielectric medium with permittivity 4 0 Then a wavelength is doubled and frequency unchanged b wavelength...
- Q An achromatic convergent doublet of two lenses in contact has a power of 2D The convex lens has power 5D What is the ratio of the dispersive powers of the...
- Q Two thin similar convex glass pieces are joined together front to front with its rear portion silvered such that a sharp image is formed 20 cm from the mirror When...
- Q As show in figure a convergent lens is placed inside a cell filled with liquid The lens has focal length 20 cm when in air and its material has refractive...
- Q 2 10 Two planoconvex lenses each of focal length 10 cm refractive index 3 2 are placed as shown In the space left water R I 4 3 is filled...
- Q In a thin prism of glass refractive index 1 5 which of the following relations between the angle of minimum deviations Sm and angle of prism r will be correct...
- Q 6 An objects is placed 21 cm in front of a concave mirror of radius of curvature 10 cm A glass slab of thickness 3 cm and u 1 5...
- Q Two point objects 0 and 0 are placed on the principal axis of a concave mirror of radius of curvature 10cm at distance 3cm and 7Cm respectively from the pole...
- Q A small telescope has a objective lens of focal length 150 cm and an eyepiece of focal length 5 cm If this telescope is used to view a 100 m...
- Q Two large plane mirrors M and M are kept at an angle of 120 as shown in figure The co ordinate of intersection of plane mirror is 0 2 meter...
- Q 3 A ray of light travelling in air is incident on a face of a rectangular slab and comes out from the opposite face The angle between the incident ray...
- Q A large convex spherical mirror in an amusement park is facing a plane mirror 10 m away A body of height 1 m standing midway between the two sees himself...
- Q A small candle is kept at a distance of 1 00 m from a screen A lens of focal length 10 0 cm is placed between the candle and the...
- Q SolveLancer Test Which of the following is Incorrect i Myopia is corrected by using convex lens ii Presbyopia is corrected by using cylindrical lens iii Hypermetropia is corrected using concave...
- Q An object is gradually moving away from the focal point of a concave mirror along the axis of the mirror The graphical representation of the magnitude of linear magnification m...
- Q 36 A ray enters a medium of origin such that the refractive index varies with y co ordinate as P P constants a a y 3 60 a YA where...
- Q 1 A mark M placed on the surface of a glass sphere is viewed through glass from diametrically opposite end If diameter of sphere is 10cm and refractive index of...
- Q In a concave mirror an object is placed at a distance d from the focus and the image is formed at a distance d from the focus Then the focal...
- Q A ray of light travelling in glass 3 2 is incident on a horizontal glass air surface at the critical angle 8c If a thin layer of water 4 3...
- Q A real object is placed 1 cm above the optical axis of a convex lens of focal length 40cm The object distance is 60cm If the object now starts moving...
- Q velocity plane mo of 21 31 6k A mirror whose reflecting surface is parallel to y z plane is moving with a velocity of i k What is the velocity...
- Q The top of a swimming pool is at ground level If the pool is 2 90 m deep how far below ground level does the bottom of the pool appear...
- Q A fish in an aquarium 30 cm deep in water can see a light bulb kept 50 cm above the surface of water The fish can also see the image...
- Q A thin lens made of glass of refractive index 1 5 has a front surface 11 D power and back surface 6 D If this lens is submerged in a...
- Q A slab of glass of thickness 6 cm and refractive index 1 5 is placed in front of a concave mirror as shown in the figure If the radius of...
- Q 23 An object far away moves on the axis of a concave mirror towards it with constant speed upto its focus Its image moves 1 Towards the mirror with constant...
- Q 3 80 cm 5 cm 4 10 cm 1 cm For a normal eye the distance between the retina and the cornea eye lens is 2 5 cm If least...
- Q A ray of light is incident on a prism as shown in the figure The total deviation suffered by the ray is X 2 Then find x BAC 1 and...
- Q An object O is placed between two parallel mirrors M and M as shown in the figure Find distance between the 2nd image formed by M and 4th image formed...
- Q n the given circuit if the value of Ra 2 2k ohm Rb 3 9 K ohm and C is 0 1 micro farad then find the positive and negative...
- Q 7 A ray of light enters a spherical drop of a liquid of refractive index This ray after getting reflected from back surface comes out as shown Given sin41 A...
- Q A point object is kept at point P 0 y as shown in the figure Find 3 the value of y so that its image is also formed at point...
- Q Question 18 Two glass slabs 1 and 2 of same refractive index are placed in air as shown A point object is placed on the left side of the slab...
- Q A spherical mirror forms an erect image three times the linear size of a real object If the distance between the object and the image is 80 cm the focal...
- Q 1 A thin glass u 1 5 lens has optical power of 10D in air Its optical power in a liquid medium with refractive index 1 6 will be 1...
- Q 8 Figure shows a thin converging lens for which the focal length is 5 cm The lens is in front of a concave spherical mirror of radius R 30 cm...
- Q A lamp is placed 6 0 m from a wall On putting a lens between the lamp and the wall at a distance of 1 2 m from the lamp...
- Q 5 Two convex and concave lens are in contact and having focal length 12 cm and 18 cm respectively Focal length of joint lens will be a 50 cm b...
- Q 19 Draw a labelled ray diagram of an astronomical telescope in the near point adjustment position 3 A giant refracting telescope at an observatory has an objective lens of focal...
- Q combining 2 prisms as shown If o then A A is made by 2 1 Average deviation would be clockwise 2 Average deviation would be anticlockwise 3 Average deviation would...
- Q 6 Two lenses are kept in contact with powers 2D and 4D The focal length of this combination will be a 50 cm b 50 cm c 25 cm d...
- Q A ray of light travelling inside a rectangular glass block of refractive index 2 is incident on the glass air surface at an angle of incidence of 45 The refractive...
- Q A point object is placed at a distance of 10 cm and its real image is formed at a distance of 20 cm from a concave mirror If the object...
- Q 5 A biprism is placed 10 cm from a slit illuminated by light of wavelength 5890 A The width of the fringes obtained on a screen at 80 cm from...
- Q Example 53 An equiconvex lens of focal length 15 cm is cut into two equal halves as shown in Fig 9 72 What is the focal length of each half...
- Q A point object approaches a plane mirror with a speed of 10 ms while the image recedes away from the mirror with a speed of 6 ms The direction and...
- Q me 10 An object AB is placed parallel and close to the optical axis between focus F and centre of curvature C of a converging mirror of focal length f...
- Q of their de Broglie wavelengths 23 Calculate the radius of curvature of a equi concave lens of refractive index 1 5 when it is kept in a medium of refractive...
- Q 37 180 A convex mirror of focal length F is placed at distance x from a convex lens of focal length F A beam of light from infinity falls on...
- Q 7 An object O is kept in air in front of a thin plano convex lens of radius of curvature 10cm It s refractive index is 3 1 5cm 3...
- Q Two identical glass 3 2 equiconvex lenses of focal length f each are kept in contact The space between the two lenses is filled with water Hw 4 3 The...
- Q 4 A transparent rod 40 cm long is cut flat at one end and rounded to a hemispherical surface of 12 cm radius at the other end A small object...
- Q A ray of light moving parallel to x axis is incident on a parabolic mirror at point P as shown in figure If angle of deviation suffered by the ray...
- Q 5 A ray is incident on prism at an angle i with normal When it comes out of prism its angular deviation is 8 Graph between 8 and i is...
- Q 5 A convex lens of focal length 20 cm is used to form a real image of an object placed 35 cm away from the lens Where should a convex...
- Q Two prisms of same glass u 2 are stuck together without gap as shown Find the angle of incidence i on the face AC such that the deviation produced by...
- Q A screen is at a distance D 80 cm from a diaphragm having two narrow slits S and S which are d 2 mm apart Slit S is covered by...
- Q A thin biconvex lens of refractive index 3 2 is placed on a horizontal plane mirror as shown The space between the lens and the mirror is then filled with...
- Q A concavo convex lens made of glass 1 5 has surfaces of radii 20 cm and 60 cm The nature and position of image of an object placed 80 cm...
- Q is placed over a plane mirror as shown then object needle and its image coincide at 15 cm When a liquid of refractive index is filled in the gap between...
- Q A plano convex lens with a radius of curvature R is lying on a reflecting plane surface such that the convex part of the lens is in contact with the...
- Q The graph between object distance u and image distance v for a lens is given below The focal length of the lens is 2006 3M a 5 0 1 05...
- Q 1 2 sin A 2 2 cos A 4 tanA 50 A ray falls on a prism ABC on 3 AB BC and travels as shown in figure The minimum...
- Q Reflection at Curved Surface 3 A rod of length 10 cm lies along the principal axis of a concave mirror of focal length 10 cm in such way that the...
- Q 08 Two plane mirrors are placed as shown in the figure Object 0 0 1 1 25 2 4 2 3 2 2 2 2 2 0 a How many...
- Q The refractive indices of the material of a prism for red and violet colours are 1 72 and 1 75 respectively Determine the angular dispersion and dispersive power if refracting...
- Q A transparent plastic bag filled with air forms a concave lens Now if this bag is completely immersed in water then it behaves as a divergent lens c equilateral prism...
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