Physics question and answers for March 09, 2024
- Q Two thin rods of length I and 12 at a certain temperature are joined to each other end to end The composite rod is then heated through a temperature The...
- Q B 19 A constant force F is applied on a uniform elastic strig placed over a smooth horizontal surface as shown in Figure Young s modulus of string is Y...
- Q Correct relation between three coefficients of a B 7 thermal expansion O a B y 03a 28 y 0 a 31 2 3 Oy B a
- Q The ratio of lengths of two rods is 1 2 and the ratio of coefficient of expansions is 2 3 The first rod is heated through 60C Find the temperature...
- Q A bimetallic strip of brass and steel each having thickness of 1 cm is kept at 20 C The strip bends with brass on outer side The radius of curvature...
- Q Two rods of lengths L and L are made of materials having coefficients of linear expansion a and az respectively If L L2 is independent of temperature which of the...
- Q 151 If the same amount of heat is supplied to two spheres of the same material having the same radius one is hollow and the other is solid then 1...
- Q A semi circular disc of radius R is placed on a smooth horizontal surface Figure shows top view of this If temperature is increased by At then displacement of coefficient...
- Q A one meter long tube open at one end with a movable piston at the other end shows resonance with a fixed frequency source a tuning fork of frequency 340...
- Q When a known resistance 8 Qand conductor at 25 Care connected in the right and left gaps of a meter bridge respectively the balancing length is 40cm If the temperature...
- Q 9 A cube of a substance of coefficient of cubica expansion y is floating in a liquid of coefficient c cubical expansion Y Y2 such that 50 c its volume...
- Q Six identical metallic rod as joined together in a pattern as shown in the figure Points A and D are maintained at temperature 60 C and 240 C The temperature...
- Q When two different thermometers A and B a re in contact with an object at equilibrium t he length of the mercury column is found to be 3 cm and...
- Q a At 20 C the volume of a copper sphere is 40 cm The coefficient of linear expansion of copper is 24 x 10 6 K 1 If the final...
- Q In a flask made of glass a a spherical part is fully filled with a liquid y Y If temperature is raised by A8 what will be height of liquid...
- Q Which of the following statements regarding superconductors is are true 1 The mechanism for Copper based superconductors Cuprates can be explained by electron phonon interaction II The mechanism for superconducting...
- Q l The temperature at the ends of a uniform rod of length 100 cm are respectively 95 C and 5 C What will be the temperature at a point 30...
- Q A steel wire of cross section 1mm is heated at 60 C and tied between two ends firmly The co efficient of linear expansion for steel is a 1 1x10...
- Q 3 A copper cup of 100 cm capacity is fully filled with glycerin at 25 C What is the required temperature to spill out the 2 52 cm of glycerin...
- Q 1 The frequency of vibration of H2 molecule is 1 32X10 Hz a Find the relative populations of v 0 1 2 3 and 4 vibrational states at 5000K b...
- Q 9 15 A cylindrical metal rod of length Lo is shaped into a ring with a small gap as shown On heating the system X 1d Xx decreases r and...
- Q The tube open at both ends as shown in the figure is completely filled with a liquid The liquid level does not change in the tube with rise in the...
- Q A steel wire whose length is 130 cm and whose cross section area is 9 50 x 10 7 m is heated to an average temperature of 830 C and...
- Q The filament of a light bulb has a surface area 64 mm The filament can be considered as a black body at temperature 2500 K emitting radiation like a point...
- Q Show that the coefficient of real expansion of liquid gamma R and the coefficient of apparent expansion of the liquid gammaA are equal In case of 2 dimensional motion one...
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