Physics question and answers for November 09, 2023
- Q 3 180 2A 4 180 3A Two identical thin plano convex glass lenses refractive index 1 5 each having radius of curvature of 20 cm are placed with their convex...
- Q A ray of light is incident on a 60 prism at the minimum deviation position The angle of refraction at the first face i e incident face of the prism...
- Q An equiconvex lens is silvered at one of the faces The R I of the material of the lens is 1 5 and its radius of curvature is 8 cm...
- Q 1 A plano convex lens fits exactly into a plano concave lens Their plane surfaces are parallel to each other If lenses are made of different materials of refractive indices...
- Q If the focal length of objective lens is increased then magnifying power of 1 microscope will increase but that of telescope decrease 2 microscope and telescope both will increase 3...
- Q 4 The figure shows the modified Fresnel biprism experiment with monochromatic source of wavelength 500 nm The refractive angle of the glass prism is 2 Find the number of bright...
- Q A sphere of glass is placed symmetrically on x axis A ray parallel to x axis is incident on the sphere at point P and emerges on x axis If...
- Q A point source is kept on the principle axis of a convex lens of focal length f at a distance 4f from it Behind the lens there is a concave...
- Q A monochromatic beam of light is incident at 60 on one face of the normal see the figure for n 3 the value of is 60 and an equilateral prism...
- Q A ray OP of monochromatic light is incident on the face AB of prism ABCD near vertex B at an incident angle of 60 see figure If the refractive index...
- Q A thin glass slab of thickness t and refractive index is inserted between an object O and an observer both of which are in a medium of refractive index Calculate...
- Q A shape of ngled triar and is place of a concave mirror of focal length f as shown in the figure Which of the figures shown in the four options...
- Q 10 The outer surface of a transparent glass slab of refractive index g 1 5 is coated by a thin layer of transparent medium of refractive index c 1 6...
- Q d 14 In young s double slit experiment d distance between slits D distance of screen from the slits At a point P on the screen resulting intensity is equal...
- Q A plane mirror is placed at origin parallel to y z plane facing positive x axis An object starts from 2 m 0 0 with a velocity of 21 31...
- Q A ray of light passing through prism having refractive index 2 minimum deviation It is found that angle of incidence is double the angle of refraction within prism Then angle...
- Q Fig 10 3 CONCE Box Fig 10 4 7 A beam of light is incident through the holes on side A and emerges out of the holes on the other...
- Q A cylindrical rod made of some unknown glass is placed on a ruled white paper of a common exercise book If axis of the rod makes an angle with the...
- Q Radius of curvature of the concave mirror is 60 cm In front of this a glass slab is situated very close to the mirror as show the figure A point...
- Q The students were asked to find the refractive index of the material of the prism if the angle of minimum deviation from prism is 60 and the angle of prism...
- Q Please solve this une plane mirror and then at the concave mirror Ans 1 125 m M 15 A very thin plane glass plate is put in front of a...
- Q One thin bi convex lens 2 and on thin bi concave lens u 1 5 are joined to form an optical system a shown in the figure Let the radii...
- Q A ray of light of frequency 5 10 4 Hz is passing through a liquid The wavelength of light measured inside liquid is found to be 450 x 10 9...
- Q In the arrangement shown in figure image of light source O is to be obtained at the bottom of beaker containing water upto height 20 cm Find H f 30...
- Q An object is located in a fixed position in front of a screen Sharp image is obtained on the screen for two positions of a thin lens separated by 10...
- Q Ans 0 15 m infront of the lens 28 A convergent beam of light passes through a diverging 1 lens of focal length 0 2 m and comes to a...
- Q A particle is oscillating on the X axis with amplitude 2 cm about the point x 10 cm with a frequency w A concave mirror of focal length 5 cm...
- Q A planoconvex lens becomes an optical system of 28 cm focal length when its plane surface is silvered and illuminated from left to right as shown in Fig A If...
- Q A tube of length 30 cm has its inner lateral surface blackened Two lenses of focal lengths 10 cm and 20 cm are fixed at the ends of the tube...
- Q The object is moved from infinity to focus in front of a concave mirror Which of the following graphs depicts the correct relation between the magnitude of distance of the...
- Q An equi biconvex lens u 1 5 of focal length 20 cm is cut into two parts and placed in contact as shown in the figure A liquid of refractive...
- Q A plane mirror makes an angle of 30 with the horizontal If a vertical ray strikes the mirror find the a between the mirror and the reflected ray
- Q 11 A plane mirror is moving with velocity 41 53 8k A point object in front of the mirror moves with a velocity 31 43 5k Here k is along...
- Q A normal human eye can see an object making an angle of 1 8 at the eye approximate height of object which can be seen by an eye placed at...
- Q 5 In the diagram shown the height of the lens is 5cm and its focal length is 10cm A point objec has been placed at a distance 30cm from the...
- Q A beam of converging rays is incident on a convex mir ror of focal length 30 cm In the absence of the mirror the converging rays would meet at a...
- Q The image of the flame of a candle due to a mirror is formed on a screen at a distance of 9 cm from the can dle The image is...
- Q A magnifying lens is of focal length 10 cm At what distance from the lens an object should be placed to view the object at maximum magnification 40 7 cm...
- Q A point object O is placed at a distance of 0 3 m from a convex lens of focal length 0 2 m It is then cut into two halves...
- Q A concave mirror of focal length 10 cm and a plane mirror are placed at a separation of 22 5 cm as shown in figure At what distance in cm...
- Q place e g e g 06 23 9 25 0 00 33 00 30 30 27 27 30 A uniform thin rod of length 10 cm is placed along the...
- Q In a YDSE experiment 2 540 nm D 1m d 1 mm A thin film is pasted on upper slit and the central maxima shifts to the point just in...
- Q n equi biconvex lens p 1 5 of focal length 20 cm is cut into two parts and placed in contact as shown in the figure A liquid of refractive...
- Q Section of a refracting surface is shown in figure The section is symmetrical about x axis Refractive index of medium on right of the surface is n with respect to...
- Q The system contains a box of length L 20 cm On the left end of the box a plane mirror is placed and on the right hand a convex lens...
- Q Two plane mirrors are inclined at angle 8 If any ray incident on one mirror becomes anti parallel after reflection from other mirror then angle 8 can be O8 90...
- Q A point object is placed in the arrangement shown The distance of image formed by lens 2 from its optical centre is f 20 cm Object 30 cm 1 20...
- Q Media Water Refractive 1 33 index Glass 1 5 Diamond 2 42 low answer the following A In which medium the critical angle will be maximum B In which medium...
- Q For a ray incident on a plane mirror as shown if mirror is rotated by 1 in direction given in the diagram reflected ray rotates by 60 O 1 clockwise...
- Q a 100 b 101 c 1 10 If a concave mirror of focal length f is placed at a distance of d from a convex lens of focal length f2...
- Q 8 A point object is performing circular motion on a circle of radius R as shown in the diagram The center of the circle is at a distance of 15cm...
- Q 1 The diagram shows two lens placed at a distance 50cm from each other Find out the final position of the image of the object shown The distance of the...
- Q The diagram shows two lenses having focal length 10cm and 10cm A line object of length 1cm is placed perpendicular to the axis The distance of the object from the...
- Q 9 In the diagram shown a point object O has been placed on the axis of the left lens at a distance 20cm The right lens is at a distance...
- Q An equiconvex lens of focal length 10 cm and refractive index 1 5 is cut vertically into two equal pieces They are placed as shown with a liquid of refractive...
- Q A beam of light has a small wavelength spread X about a central wavelength The beam travels in vacuum until it enters a glass plate at an angle relative to...
- Q What type of a spherical mirror is required to project the image of the flame of a candle on a wall 9 ft away from the flame Determine the position...
- Q A L 2 3 In the diagram shown the lens has focal length 3L An object is placed at a distance 4L from the lens A glass slab is placed...
- Q An equi biconvex lens 1 5 of focal length 20 cm is cut into two parts and placed in contact as shown in the figure A liquid of refractive index...
- Q 6 A planet subtends an angle min at the pole of a concave mirror The diameter of the image of the planet formed by the mirror is 4 mm Calculate...
- Q below OI CD are put in contact as shown in figure i and ii A C fig i fig ii The resulting focal length of fig i and ii will...
- Q 8 An arrow of length 15 cm is placed along the axis of a con cave mirror Its sharp end is at a distance of 30 cm from the mirror...
- Q A uniform thin rod of length 10 cm is placed along the principal axis of a concave mirror of radius of curvature 20 cm If the nearer end of the...
- Q 3 The diameter of the moon is about 2160 m When the moon s distance from a concave mirror is 35 36 104 km an image of diameter 1 5...
- Q Figure shows the behaviour of light rays with respect to a plano convex lens whose plane surface is silvered as shown in the figure If the refractive index of the...
- Q ance and image distance From the mirror equation we get or Since or 1 1 V U u V 1 m m m 1 1 f u 12 u u...
- Q a convex lens of focal length 30 cm If a plane mirror were put perpendicular to the principal axis of the lens and at a distance of 40 cm from...
- Q 35 A marginal ray falls upon a concave mirror of radius of curvature 20 cm as shown in figure Find distance CM in cm 43 CH 1 2 30 J...
- Q A convex lens of focal length 100 cm is cut along the principal axis and a thin layer of thickness 1 mm is removed and then put together to form...
- Q A particle executes S H M in front of a concave mirror of radius 1 m about the centre of curvature along the axis with very small amplitude a The...
- Q A ring of radius R is floating on the surface of a liquid of refractive index 3 A point source of light is placed on the axis of the ring...
- Q The magnifying power of an astronomical telescope in normal adjustment is 100 The distance between the objective and the eyepiece is 101 cm The focal length of the objectives and...
- Q A ray of light is incident on an equilateral prism at an angle of incidence i such that it is incident normally on other refracting faces Find i take glass...
- Q equation State clearly the three salient features observed in photoelectric effect which can be explained on the basis of the above equation 22 A small illuminated bulb is at the...
- Q 5 in physics complete reflection of a ray of light within a medium such as water or glass from the surrounding surfaces back into the medium The phenomenon occurs if...
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