Physics question and answers for April 09, 2024
- Q 12 Which of the following best describes exothermic chemical reactions They never release heat They always release heat They never occur spontaneously They always occur spontaneously 13 Which of the...
- Q 18 Two wires are made of the same material and have the same volume The first wire has cross sectional area A and the second wire has cross sectional area...
- Q Two small spherical metal balls having equa masses are made from materials of densities p and p p 8p and have radii of 1 mm and 2 mm respectively they...
- Q Four identical hollow cylindrical columns support a big structure of mass M The inner and outer radii of a column are R and R2 respectively Assuming the load distribution to...
- Q Q 95 3 2 2 One end of a metal wire is fixed to a ceiling and Q 95 a load of 2m hangs from the other end A similar...
- Q 97 An electric fan running at a speed of 60 rpm is switched off at t 0 If the fan stops after 10 seconds the number of revolutions made by...
- Q A uniform rod of length cross section area A and young s modulus Y is placed on a smooth horizontal surface Two horizontal forces 3F and 2F are applied at...
- Q 4 One end of steel wire is fixed to ceiling of an elevator moving up with an acceleration 2 m s2 and a load of 10 kg hangs from other...
- Q Which of the following affects the elasticity of a substance 1 Hammering and annealing 2 Change in temperature 4 All of these d of length 2m and cross section area...
- Q A uniform rod of mass M length L area of cross section A and Young s modulus Y is suspended vertically from a fixed support Then YH AHGU G Hi...
- Q 1 Two chairs A and B are in an empty room overnight Chair A is made of steel while chair B is made of wood In the night and in...
- Q Two prisms have refracting angles 1 and 1 5 respectively They are made of materials of refractive index and respectively If deviation in a light ray by the combination of...
- Q o A potentiometer consists of a wire of length 4 m and resistance 10 Q2 It is connected to a cell of e m f 2 V The potential difference...
- Q Two friends Ashok and Arup wanted to prepare saturated solutions of a water soluble solute One day they took a thermometer and observed the room temperature as 30 C From...
- Q 1 A wooden wheel of radius R is made of two semi circular parts see figure The two parts are held together by a ring made of a metal strip...
- Q conductivity of the first rod then rate of melting of ic will be A 0 25 gm sec B 0 5 gm sec Duration 3 00 00 Time Left 1...
- Q Q 1 If x grams of steam at 100 C becomes water at 100 C which converts y grams of ice at 0 C into water at 100 C then...
- Q 2 2 The dispersion relation for a low density plasma is o a c k where wo is the plasma frequency and c is the speed of light in free...
- Q The coefficient of volume expansion 49x10 5 K Calculate the fractional change in its density when the temperature is raised by 30 C AMU Engg 2010 a 7 5 10...
- Q 0 1 Two mechanical waves y 2 sin 2x 50 t 2x y 4 sin 2x ax 100 t propagate in a medium with same speed Sin 501 2n los...
- Q me 9 ad the d B A ball falling in a lake of depth 200 m shows 0 1 decrease in its volume at the bottom What is the bulk...
- Q The dimensions of two wires A and B are the same 9 But their materials are different Their load extension graphs are shown If Y and Y are the values...
- Q A slender prismatic rod of circular cross sectional area 100 mm is subjected to a force of 100 kN If Young s modulus of the rod material be 100 GPa...
- Q and heated Then A between two rigid walls A compressive thermal strain will be developed in the rod A tensile thermal strain will be developed in the rod The value...
- Q 4 M M m In a U tube the liquid levels are equal in the state of equilibrium If the U tube is taken to the with an accelerated motion...
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