Physics question and answers for November 12, 2023
- Q Thank you 15 Which of the following quantities related to a does not depend on the wavelength of the ind light 1 Refractive index 2 Focal length 3 Power
- Q 01 28 25 A glass beaker has diameter 4cm wide at the bottom An observer observes the edge of bottom when beaker is empty as shown in figure When the...
- Q Qn 11 A plane mirror of semicircular shape radius 1m is placed in y Z plane with its diameter along y axis and centre at origin An object is placed...
- Q A ray of light travels in different media as shown in the figure The emerging light grazes the boundary of air and water The value of g in terms of...
- Q 2 There is a vessel containing a liquid of refractive index 1 4 A point source of light is situated at a depth of 5 cm from the surface of...
- Q An object having a length of 21 cm is placed away from the concave mirror of radius of curvature 10 cm A glass slab of refractive index 1 5 is...
- Q For a concave mirror paraxial rays are focused at distance distance x from pole then R is radius of curvature R 2 1 X R 2 3 x 2 x...
- Q 6 The diagram below shows two narrow converging lenses having length of focus a and a The horizontal separation between them is d The distance d is less than focal...
- Q 1 Figure shows three thin lenses of the same material with sides that either are flat or have same radius of curvature Rank the lenses according to the magnitude of...
- Q View in English As shown in figure a convergent lens is placed inside a cell filled with liquid The sens hos focal length 20 cm when in air and its...
- Q A short straight object of height 100 cm lies before the central axis of a spherical mirror whose focal length has absolute value 40 cm The go image of object...
- Q touches the rod Its magnification will be 1 1 2 2 3 3 4 4 An achromatic convergent doublet of two lenses 44 in contact has a power of 2D...
- Q A boy stands straight infront of a mirror at a distance of 30 cm aways from it He sees his erect image whose height is 1 5 th of his...
- Q A thin lens of same radius of curvature 20 cm is having two different medium on its two sides extending upto infinity as shown in the figure Then BA B...
- Q A ray of light from a denser medium is incident on a rarer medium at an angle 8 The reflected and refracted rays are at right angles to each other...
- Q 9 A small object is placed 10 cm infront of a plane mirror If you stand behind the object 30 cm from the mirror and look at its image the...
- Q the objec A U shaped wire is placed before a concave mirror having radius of curvature 20 cm as shown in figure Find the total length of the image I...
- Q A point source is kept on the principal axis of a convex lens of focal length f at a distance 4f from it Behind the lens there is a concave...
- Q 5 There are two plane mirror inclined at 40 as shown in the figure A ray of light is incident on mirror M then what should be the value of...
- Q Consider the setup shown in the figure which uses a right angled prism to transmit a horizontal incident ray This device is known as anamorphic de magnifier Through the prism...
- Q When an object is placed at infinity of a con cave mirror then the image is of point size Then since we can t see it entirely then how do...
- Q Write an expression for unit vector along reflected ray 4 if unit vectors i and n represents unit vectors along incident light ray and normal at point of reflection and...
- Q A convex lens of focal length 20 cm is cut into two equal parts that are shifted as shown in figure An object is placed at 30 cm from point...
- Q A Fish and a Fly Approaching Each Other A fish in an aquarium approaches the left wall at 2 5 m s observes a fly approaching it at 8 m...
- Q In the situation shown slab is close to the lens The distance in cm between the lens the mirror so that final image of object is formed on object itself...
- Q e kg s 1 d kg s 36 A concave mirror of focal length f is placed at a distance of d from a convex lens of focal length f...
- Q A convex lens of focal length 100 cm and a concave lens of focal length 10 cm are placed coaxially at a separation of 90 cm If a parallel beam...
- Q and MP PMT 1996 2003 JIPMER 2000 Gujarat 200 b 1 d 1 1 a 1 u c u 1 i 3 is incident A ray of light travelling in...
- Q If radii of curvature of both convex surfaces is 20 cm then focal length of the lens for an object placed in air in the given arrangement is 10 cm...
- Q 3 Width of a slab is 6 cm whose u If its rear surface is silvered and object is placed at a distance 28 c 2 from the front face...
- Q Question No 22 Two planoconvex lenses each of focal length 10 cm refractive index are placed as shown In the space 2 left water R I 4 3 is filled...
- Q For what distance ray optics is a good approximation when the aperture is 4 mm and the wavelength of light is 400 nm A B D 24 m 40 m...
- Q 24 Match the column I with column II option from the given codes Column I Column II i Planar wavefront incident P After reflection of on a thin convex lens...
- Q Two plano convex lenses L 1 4 and L2 H2 1 5 of equal radii of curvature R 20 cm are placed so that their principal axes are parallel to...
- Q A ray of light is incident on a sphere of glass 1 414 at an angle of incident i as shown in figure For what value of i the ray...
- Q As you walk away from a vertical plane mirror your image in the mirror is always the same height O decreases in height O changes from being a virtual image...
- Q To shoot a fish with a laser gun should you aim directly at the image slightly above or slightly below C b na a aim directly at the image b...
- Q A thin convex lens whose focal length in air known to be 30 cm is cut into two parts by a transverse plane parallel to the principal axis 0 5...
- Q ALLEN A man with normal near point 25 cm reads a 4 book with small print using a magnifying glass a thin convex lens of focal length 5 cm What...
- Q ALLEN When the angle of incidence on a material is 60 22 the reflected light is completely polarized The velocity of the refracted ray inside the material is in ms...
- Q A convex lens of focal length 25 cm is placed at a distance x from a concave lens of focal length 7 cm When a parallel beam is incident on...
- Q Two glass hem heres of refractive index and radius R are placed with their plane surfaces opposed separated by a distance d Answer A B C D Your Attempt Correct...
- Q Lx 15 cm A concave mirror is moving with velocity 41 2jcms whereas a point object is moving with 8 11 cms as shown in 1 figure The object is...
- Q 3 0 02 cm 4 0 cm Two point white dots are 1 mm apart on a black 15 paper They are viewed by eye of pupil diameter 3 mm...
- Q ALLEN A vessel is quarter filled with a liquid of refractive 41 index The remaining parts of the vessel is filled with an immiscible liquid of refractive index 3 2...
- Q A square wire of side 1 cm is placed perpendicular 9 to the principal axis of a concave mirror of focal length 15 cm at a distance of 20 cm...
- Q 11 Interference monochromatic fringes are produced by light falling normally on wedge shaped film of cellophane whose refractive index is 1 4 The angle of wedge is 20 sec of...
- Q Find the distance of final image from mirror Eye 1 18 cm 3 20 cm 6 cm 4 6 cm 4 8 cm 2 16 cm 4 14 cm 17...
- Q 1 1 5 R 10 cm What is focal length of this curved surface 1 3 4 Correct Answer 4 10 cm 5 cm 20 cm 30 cm
- Q 17 There is a small air bubble inside a glass sphere 1 5 of radius 10 cm The bubble is 40 cm below the surface and is viewed normally from...
- Q A thin prism having refractive index 1 52 and 3 prism angle is 10 is combined with another prism having refractive index 1 72 This combination produces dispersion without deviation...
- Q given object O and mirror arrangement the velocity in m s of the image with respect to ground wil be All the velocities are given with respect to ground 15...
- Q A ray of light passing from a denser medium to a rarer medium gets partially reflected and refracted The angle of reflection is rand that of refraction is r The...
- Q A ray of light initially parallel to the principal axis of a convex lens after refraction Will pass parallel to principal axis Will pass through principal focus Will pass through...
- Q 13 A disc is placed on a surface of pond which has refractive index 5 3 A source of light is placed 4 m below the surface of liquid The...
- Q The bottom of a container is made of an equi convex lens The focal length of the lens in air is 60 cm Now its lower surface is silvered The...
- Q When we see an object the image formed on th retina is 1 real 3 erect virtual 4 None of these
- Q A light ray of wavelength 450 nm in air is incident on plane surface of a transparent medium at angle of incidence 60 As it enters it deviates by 15...
- Q If the speed of light in a vacuum is c what is the speed of light in a medium with an index of refraction of 2 00 4 00c O2...
- Q In terms of light which quantity remains constant regardless of the medium through which it travels Ofrequency O speed O amplitude wavelength
- Q What is measured by the index of refraction of a medium O how much light changes speed when entering the medium O the magnitude of the angle of refraction O...
- Q Refer to the table In which medium does light travel the fastest Medium lens of human eye quartz crystal Pyrex glass Plexiglas plastic benzene zircon diamond Index of refraction 1...
- Q Which of the following does not illustrate a feasible method of altering the orientation of an image produced from an object or another image by using a prism a Image...
- Q 6 Draw the image in the following mirror I
- Q A submarine is 300 m horizontally out from the shore and 100 m beneath the surface of the water A laser beam is sent from the submarine so that it...
- Q mathongo mathongo A ray of laser of a wavelength 630 nm is incident at an angle of 30 at the diamond air interface It is go mathongo mathongo mathongo going...
- Q The sketch shows a dummy lens with two principal rays of light refracted from the lens The dashed line is optical axis of the lens Which lens is it Optical...
- Q An equiconvex lens of refractive index 3 2 and of radius of curvature 16 cm is placed co axially at a distance of 90 cm in front of concave mirror...
- Q A ray of light falls on the surface of spherical glass 30 having refractive index n making angle 30 with normal then net angle of deviation between emergent and incident...
- Q A screen is placed 90 cm from an object The image of an object on the screen is formed by a convex lens at two different locations separated by 20...
- Q 5 Consider the situation in figure A small fish F is moving in vertically upward diection with velocity 8 cm s If the time dependent refractive index of water is...
- Q In the figure shown if the object O moves towards the plane mirror then the image I which is formed after successive reflections from M M respectively will move M...
- Q 35 180 A ray of light incident at 30 on a prism of refractive angle 90 The emergent ray is at an angle of 30 with the incider ray The...
- Q A fish is raising vertically to the surface of water in a lake uniformly at the rate of 2 ms observes a bird diving vertically towards the water at a...
- Q An object is placed at a distance of 15 cm from a convex lens of focal length 10 cm On the other side of the lens a convex mirror is...
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