Physics question and answers for November 04, 2023
- Q Figure 9 34 shows an equiconvex lens of refractive index 1 50 in contact with a liquid layer on top of a plane mirror A small needle with its tip...
- Q A cylindrical bucket of depth 60 cm is partly filled with a liquid of refractive index 1 5 and with oil on top of liquid of refractive index 2 It...
- Q Two concave mirror of focal length f and f are placed facing each other and d distance apart Find the value of dmin If object is placed between the mirrors...
- Q 26 A plano convex lens of focal length 10 cm is silvered at its plane face The distance d at which an object must be placed in order to get...
- Q A convergent beam incident on a concave lens as shown in figure Which of the following statements is not correct The image formed is real The image formed is virtual...
- Q The refractive index of a slab of length 2 changes X MO T Mo as x 1 Mo 0 x 1 x 21 where x is measured from left and...
- Q A biconvex thin lens of radius of curvature R is made up of variable refractive index 21 Assume d very small aperture 2d R A point object O is placed...
- Q The circular boundary of the concave mirror subtends a cone of half angle at its centre of curvature The minimum value of for which any ray incident on this mirror...
- Q An equilateral triangular prism is made of glas u 1 5 A ray of light is incident normally on on of the faces The angle between the incident ar emergent...
- Q Two convex lens each of focal length 50 cm and a concave lens of focal length 20 cm are placed in closed contact The power of combination is 50 cm...
- Q Monochromatic light of wavelength falls normally on a single slit of width b Show that intensities of the first and second secondary maxima are approximately 4 5 of I and...
- Q 1 Observe the following diagram carefully and identify the statement that is correct as per this diagram 1 Medium A Medium B i Speed of light in medium A is...
- Q In a plane transmission grating the angle of diffraction for the second order principal maximum for the wavelength 500 nm is 30 The number of lines in two centimeter of...
- Q Two parallel plane mirrors M and M have a length of 20 m each and are 10 cm apart A ray of light is incident on one end of mirror...
- Q A ray is incident at a height h 1 cm on an infinite stack of very thin convex lenses each having thickness 1 cm and focal length 100 cm as...
- Q There is an equiconvex glass lens with radius of each face as R and alg 3 2 and alw 4 5 If there is water in object space and air...
- Q 2 Two spherical mirrors one convex and other concave cach of same radius of curvature R are arranged coaxially at a distance of 2R from each other A small circle...
- Q An object is 17 cm in front of a diverging lens that has a focal length of 13 cm How far in front of the lens should the object be...
- Q parallel plate condenser with a dielectric constant K between the plates has a capacity C and is charged to a potential V volt The dielectric slab is slowly removed from...
- Q 1 A plane mirror is moving with velocity 4 5j 8k A point object in front of the mirror moves with a velocity 31 4j 5k Here is along the...
- Q A linear object AB is placed along the axis of a concave mirror The object is moving towards the mirror with speed V The speed of the image of the...
- Q 3 Two plane mirrors A and B are aligned parallel to each other as shown in the figure A light ray is incident at an angle 30 at a point...
- Q For the same angle of incidence angle of refraction of 2 media A and B are 25 and 35 respectively In which one of the two media is the speed...
- Q i Name the phenomenon on which the working of an optical fibre based ii What are the prerequisites for this phenomenon to occur iii Draw a ray diagram of an...
- Q A beam of width t is incident at 45 on an air water boundary The width of the beam in water is Air Water u 45
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