Physics question and answers for August 28, 2024
- Q If I is the moment of inertia of a solid body having a coefficient of linear expansion then the change in I correspondin to a small change in temperature AT...
- Q Light with intensity 18 W cm falls on non reflecting surface at normal incidence If surface has an area of 20 cm2 find the average power exertec surface during time...
- Q A travelling wave represented by y A sin ot kx is superimposed on another wave represented by y A sin cot kx The resultant is TAIEEE 2011 1 A wave...
- Q A letter A consists of a uniform wire of resistance 0 2 oh m per cm The sides of the letter are each 20 cm long and the cross piece...
- Q Q In a dispersive medium the phase velocity u is a u is a function of b u is a not a function of c u is a function of...
- Q Zero Marks Negative Marks 1 If none of the options is chosen i e the question is unanswered In all other cases The capacitor in the figure has C 10...
- Q The figure shows two identical metallic plates kept parallel to each other and charged as shown Calculate the surface charge density in C cm2 that will appear on the side...
- Q Neganve Marks The figure shows two identical metallic plates kept parallel to each other and charged as shown Calculate the surface charge density in C cm that will appear on...
- Q A ray of light passes through an equilateral prism in such a manner that angle o incidence is equal to angle of emergence and each of those angles is equal...
- Q are A wave pulse is generated in a string that lies along x axis At the points A and B as shown in figure if R and R ratio of...
- Q 20 The following figure depicts a wave travelling in a medium Which pair of particles are in phase 1 A and D 2 B and F B wave depends E...
- Q A uniform spherical ball of radius r and mass m is dropped into a lake having liquid of density one third of density of ball and viscosity n Choose INCORRECT...
- Q We know moving charges are what produces an electrom agnetic field But we know the particles of light are photon s and that photons have no charge Then how can...
- Q he dispersive power of material of a lens is 0 04 and mean focal length of lens s 15 cm The difference in focal lengths of lens for violet and...
- Q Zero Marks 0 In all other cases sphere of radius R carries charge such that its volume charge density is proportional to the square of the distance from the centre...
- Q Two coherent sources are separated by a distance d 2A are placed at the centre of a large circular screen arranged symmetrically as shown R is radius circular screen R...
- Q 4 Maximum displace There are some points in a stationary waves which 1 Are never at rest 2 Are always in motion 4 Are at rest once in each cycle...
- Q A travelling wave on a string is given by y Asin ax t The displacement and velocity of oscillation of a point a 0 56 cm 12 sec A 7...
- Q In a lake a fish is rising vertically to surface of water uniformly at a rate of 3 m s observes a bird diving vertically towards water at a rate...
- Q Negative Marks 1 In all other cases If the escape velocity for an object placed at the surface of the earth is ve then the escape velocity for the same...
- Q There are n infinite metal plates arranged parallel to each other as shown Q Q Q3 charges on these plates Charge Q on the left surface of leftmost plate in...
- Q A stationary man observes that the rain strikes him at an angle 60 to the horizontal When he begins to move with a velocity of 25 m s then the...
- Q A circular hole of radius R 2 is cut from a circular disc of radius R The disc lies in the xy plane and its centre coincides with the origin...
- Q Two equal masses are situated at a separation ro One of them is imparted a velocity vo ind the ratio of maximum and minimum separation between them Gm To perpendicular...
- Q Consider the following statements 1 XeO3 is a colourless explosive solid 11 XeOF4 is a colourless volatile solid III lonization enthalpy of molecular oxygen is identical with xeno Choose the...
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