Physics question and answers for August 30, 2024
- Q Out of six particles two particles have speed of 3 units and other two particles have speed of 5 units The remaining two particles have speed of 2 units and...
- Q One end of a metal rod of length 1 0m and area of cross section 100 cm is maintained at 100 C If the other end of the rod is...
- Q A box of negligible mass containing n moles of an ideal gas of molar mass M and adiabatic exponent Y moves with constant speed v on a smooth horizont surface...
- Q The figure shows consisting of two metals welded together The inner core has a radius R while the outer metal occupies the region from R to 2R in meters The...
- Q Which of the following is not an assumption of kinetic theory of gases The volume occupied by the molecules of the gas is negligible in comparison to the volume of...
- Q Two circular discs A and B with equal radii are blackened They are heated to same temperatur identical conditions What inference do you draw from their cooling curves 1 A...
- Q Area of cross section of two rods of equal lengths are A and A and thermal conductivities are K and K Specific H are S and S condition for equal...
- Q A spy satellite moves at a height of 50 km above the Earth s surface The minimum diameter of a telescope objective on board the satellite which can resolve objects...
- Q In a double slit experiment light of wavelength 750 nm and 900 nm illuminates the slits with a slit separation of 2 mm forming two fringe patterns The distance of...
- Q A 3 ha field was plowed using a 15 cm wide animal drawn plow at 4 kph and fie efficiency of 75 The draft required to pull the plow is...
- Q A diamagnetic object is hung by a thread from a very sensitive spring balance between the poles of an electromagnet When the magnetic field of the electromagnet is increased in...
- Q 3 Become zero A beam of light composed of red and green rays is incident obliquely at a point on the face of a rectangular glass slab When coming out...
- Q A conversing beam of rays is incident on a diverging lens Having passed though the lens the rays intersect at a por 15 cm from the lens on the opposite...
- Q and the emf of its standard cell is E volt It is employed to measure the emf of a battery whose internal resistance is 0 5 22 If the balance...
- Q The magnetic field of Earth at the equator is approximately 40 x 10 Tesla If the Earth s magnetic field is due to a magnetic dipole at the centre of...
- Q Four identical point charges are placed at vertices of square ABCD of side 10 cm with centre at O A point charge placed on Z axis at point 0 0...
- Q A thin dielectric charged layer is placed in uniform electric field After placing it in field field on both side of dielectric is given by diagram If E 20 N...
- Q 11 A rectangular block of mass M area of cross section A and density D is floating on surface of water If it is given a small vertical displacement in...
- Q angle of second prism should be 176 2 8 3 10 4 4 A beam of light from a souce L is incident normally on a plane mirror fixed at...
- Q In column l configuration of charge is given whereas column Il gives variation of field E and potential V on a function of r Match the entries Column l Q1...
- Q 5 An a c reaches a maximum value of 100 ampere the frequency being 50 Hz Determine the rate of charge of the current in ampere per second when the...
- Q A very long straight wire carries a current instant when a charge Q at point P has velocity v as shown the force on the charge is 9 a 1...
- Q For a situation shown in figure find the refractive index of glass so that it will suffer total internal reflection at the vertical surface AIIMS 2016 60 3 1 31...
- Q An electron enters in a region where magnetic E and electric fields E are mutually perpendicular one another then 1 It will always move in the direction of B 2...
- Q A point source of sound is placed in a non absorbing medium Two points A and B are at the distance of 2 m and 3 m from the source...
- Q B H Het and O all having the same kinetic energy pass through a region in which there is a uniform magnetic field perpendicular to their velocity The masses of...
- Q A beam of light consisting of red green and blue colours is incident on a right angled prism The refractive index of the material of the prism for the above...
- Q rying power In a laboratory four convex lenses L L L and L of focal lengths 2 4 6 and 8 cm respectively are available Two of these lenses form...
- Q ue to surface tension the excess pressure inside a smaller drop is 9 units If 27 smaller drops ombine then the excess pressure inside the bigger drop is 4 units...
- Q 2 2 3 I 4 In a diffraction pattern due to a single slit of width a the first minimum is observed at an angle 30 when light wavelength 5000A...
- Q A astronomical telescope has objective and eyepiece of focal lengths 40 cm and 4 cm respectively To view an object 200 cm away from the objective the lenses must be...
- Q Water rises in a capillary tube of radius r upto a height h The mass of water in a capillary r of radius will be 4 m The mass of...
- Q An engine is moving on a circular path of radius 200 m with a speed of 35 m s While moving the engine blows a whistle of frequency 700 Hz...
- Q A large open tank containing water has two holes to its wall A square hole of side a is made at a depth y and a circular hole of radius...
- Q 4 microscope will decrease but that of telescope In an astronomical telescope in normal adjustment a straight black line of length L is drawn on inside part of objective lens...
- Q Tength of eyepiece Resolving power of a microscope depends upon 1 the focal length and aperture of the eye lens 2 the focal lengths of the objective and the eye...
- Q hs of focal length 0 33m 4 None of the above The focal length of a plano concave lens is 10 cm then its focal length when its plane surface...
- Q A microscope has an objective of focal length 0 5 cm and an eye piece of focal length 1 cm It is desired to have a magnification of 500 The...
- Q metal sphere of radius R density p moves with terminal velocity v through a liquid of nsity o Another sphere of same radius but of density p2 moves through same...
- Q The rms speed of a large number of molecules of a gas in a vessel is 600 m s If 25 of the gas leaks out at constant temperature then...
- Q the focal length of objective and eye lens of a stronomical telescope are respectively 2m and 5 cm Final image is formed at i least distance of distinct vision ii...
- Q A person can see clearly only upto a distance of 25cm He wants to read a book placed at a distance of 50cm Wha kind of lens does he required...
- Q An object is placed at a distance of 20 cm in rarer medium from the pole of a convex spherical refracting surface of radius of curvature 10 cm If the...
- Q A body is located on a wall Its image of equal size is to be obtained on a parallel wall with the help of a convex len The lens is...
- Q A proton moves with a constant speed of 50 m s along the x axis through crossed electric and magnetic fields which are perpendicular to each other If the magnetic...
- Q 4 b and c both A person cannot see distinctly at the distance less than one metre Calculate the power of the lens that he should use to read a...
- Q A source of frequency fgives 5 beats sec when sounded with a source of frequency 200 Hz The second harmonic of source of frequency fgives 10 beats sec when sounde...
- Q A racing car moving towards a hill sounds its horn Driver of the car observes that the sound reflected from the hill has a pitch one octave higher than the...
- Q A biconvex lens forms a real image of an object placed perpendicular to its principal axis Suppose the radii of curvature of the lens tend to infinity Then the image...
- Q 14 In the circuit shown the switch S closed for a long time The switch is now opened so that the capacitor gets charged 50 kQ www OV 1 S...
- Q A particle perform SHM of amplitude A along a straight 3A from its mean 2 position Its kinetic energy gets increased by an amount mo A due to an impulsive...
- Q A lens is placed between a source of light and a wall It forms images of area A and A on the wall for its two different postions The area...
- Q In Gallilean telescope if the powers of an objective and eye lens are respectively 1 25 D and 20D then for rel vision the length and magnification will be 1...
- Q A particle perform simple harmonic motion with amplitud A and time period T Average speed of the particle over the time interval during which it travels a distance of A...
- Q 1 20 cm 2 40 cm 3 30 cm 4 10 cm A luminous object is placed at a distance of 30 cm from a convex lens of focal length...
- Q If there had been one eye of the man then 1 Image of the object would have been inverted 2 Visible region would have decreased 3 Image would have not...
- Q A bar of 2 m long with negligible weight rests in horizontal position on two smooth inclined planes as shown in Fig Determine the distance x at which the load...
- Q The image for the converging beam after refraction through the curved surface is formed at n 1 n 3 2 30 R 20cm 1 x 40 cm 2 x 40...
- Q 1 w 8 2 8 00 When white light passes through the achromatic combination of prisms then what is observed Only deviation 2 Only dispersion 4 None of the above...
- Q 3 2 4 1 A plate in the form of a semicircle of radius a has a mass per unit area of kr where k is a constant and r...
- Q 3 the total momentum of the ball and the earth is conserved 4 the total energy of the ball and the earth remains the same A particle of mass m...
- Q The refractive indedx of a prism for a deviation the angle of incidence will be 1 30 monochromatic wave is 2 and its refracting angle is 60 For minimum 2...
- Q 1 3 50 2 6 25 3 0 03 4 none of these All the listed things below are made of flint glass Which one of these have greatest dispersive...
- Q A Galileo telescope has an objective of focal length 100 cm magnifying power 50 The distance between the t lenses in normal adjustment will be 2 100 cm 3 98...
- Q Three large conducting charged sheets are kept parallel to each other as shown in figure Net force experienced by a charge q placed between plates A and Bis A B...
- Q In the figure given below there are two convex lens L and L having focal length of f and f respectively The distance between L and L will be 1...
- Q Q10 a State the D Alemberts principle b A plane has a takeoff speed of 88 3 m s and requires 1365 m to reach that speed Determine the acceleration...
- Q A uniform thin rod of length L is oscillating in vertical plane about a fixed horizontal axis passing through one of its end Frequency of small oscillations of the rod...
- Q A body of mass m collides elastically with another body of mass m at rest If the velocity of m after collision becomes 2 3 times its initial velocity the...
- Q If Cp and Cydenoted the specific heat of unit gram mass of nitrogen at constant pressure and volume respectively then R is universal gas constant O Cp Cv R O...
- Q 1 prism 2 glass slab 3 biconvex lens Light of wavelength 4000 is incident at small angle on a prism of apex angle 4 The prism has n 1 5...
- Q deviation of 1 15 2 22 5 3 0 4 12 5 The refractive index of the material of prism of 60 angle is 2 At what angle the ray...
- Q The dispersion of light in a medium implies that 1 lights of different wavelengths travel with different speeds in the medium 2 lights of different frequencies travel with different speeds...
- Q 1 2 4 2 1 5 3 1 2 A beam of light is converging towards a point A plane parallel plate of glass of thickness t refractive index u...
- Q If at a small height h above the surface of earth acceleration due to gravity decreases by 0 2 then at depth h below the surface of earth the acceleration...
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