Previous Year Questions
18 questions — organised by subject with solutions and explanations.
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A wooden wheel of radius is made of two semicircular part (see figure). The two parts are held together by a ring made of a metal strip of cross sectional area and length is slightly less than . To fi
A particle of mass is at rest at the origin at time . It is subjected to a force in the direction. Its speed is depicted by which of the following curves?
A cylindrical tube, open at both ends, has a fundamental frequency, , in air. The tube is dipped vertically in water so that half of it is in water. The fundamental frequency of the aircolumn is now:
The figure shows an experimental plot for discharging of a capacitor in an R-C circuit. The time constant of this circuit lies between
A boy can throw a stone up to a maximum height of . The maximum horizontal distance that the boy can throw the same stone up to will be
The mass of a spaceship is . It is to be launched from the earth's surface out into free space. The value of and (radius of earth) are and respectively. The required energy for this work will be:
A liquid in a beaker has temperature at time and is temperature of surroundings, then according to Newton's law of cooling the correct graph between and is:
This question has statement- 1 and statement- 2. Of the four choices given after the statements, choose the one that best describe the two statements.An insulating solid sphere of radius has a uniform
Resistance of a given wire is obtained by measuring the current flowing in it and the voltage difference applied across it. If the percentage errors in the measurement of the current and the voltage d
A Carnot engine, whose efficiency is , takes in heat from a source maintained at a temperature of . It is desired to have an engine of efficiency . Then, the intake temperature for the same exhaust (s
If a simple pendulum has significant amplitude (up to a factor of of original ) only in the period between to , then may be called the average life of the pendulum When the spherical bob of the pendul
Helium gas goes through a cycle (consisting of two isochoric and isobaric lines) as shown in figure efficiency of this cycle is nearly : (Assume the gas to be close to ideal gas)
This question has Statement 1 and Statement 2 . Of the four choices given after the Statements, choose the one that best describes the two Statements.If two springs and of force constants and , respec
A spectrometer gives the following reading when used to measure the angle of a prism.Main scale reading: degreeVernier scale reading : 09 divisionsGiven that 1 division on main scale corresponds to de
Two cars of masses and are moving in circles of radii and , respectively. Their speeds are such that they make complete circles in the same time t. The ratio of their centripetal acceleration is
A thin liquid film formed between a U-shaped wire and a light slider supports a weight of (see figure). The length of the slider is and its weight negligible. The surface tension of the liquid film is
In a uniformly charged sphere of total charge and radius , the electric field is plotted as function of distance from the center. The graph which would correspond to the above will be:
Two electric bulbs marked and are connected in series to a supply. Which of the bulbs will fuse?