Physics-
General
Easy
Question
A hollow vertical cylinder of radius r and height h has a smooth internal surface. A small particle is placed in contact with the inner side of the upper rim, at point A, and given a horizontal speed u, tangential to the rim. It leaves the lower rim at point B, vertically below A. If n is an integer, then–
The correct answer is:
Related Questions to study
physics-
A machine, in an amusement park, consists of a cage of the end of one arm, hinged at O. The cage revolves along a vertical circle of radius r (ABCDEFGH) about its hinge O, at constant linear speed v= 
. The cage is so attached that the man of weight 'W' standing on a weighing machine, inside the cage, is always vertical. Then which of the following is correct
A machine, in an amusement park, consists of a cage of the end of one arm, hinged at O. The cage revolves along a vertical circle of radius r (ABCDEFGH) about its hinge O, at constant linear speed v= . The cage is so attached that the man of weight 'W' standing on a weighing machine, inside the cage, is always vertical. Then which of the following is correct
physics-General
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Acceleration versus time graph of a particle moving in a straight line is as shown in adjoining figure. If initially particle was at rest then corresponding kinetic energy versus time graph will be:
Acceleration versus time graph of a particle moving in a straight line is as shown in adjoining figure. If initially particle was at rest then corresponding kinetic energy versus time graph will be:
physics-General
physics-
Volt/meter is the unit of
Volt/meter is the unit of
physics-General
chemistry-
From methyl alcohol we get:
From methyl alcohol we get:
chemistry-General
chemistry-
Which of the following is oxidised by 
Which of the following is oxidised by
chemistry-General
maths-
Calculate the median from the following data:
Calculate the median from the following data:
maths-General
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Find the mean of the following distribution
Mean = 55
Find the mean of the following distribution
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chemistry-
Phenol, when it first reacts with concentrated sulphuric acid and then with concentrated nitric acid, gives
Phenol, when it first reacts with concentrated sulphuric acid and then with concentrated nitric acid, gives
chemistry-General
physics-
In C.G.S. system the magnitude of the force is 100 dyne. In another system where fundamental physical quantities are kilogram, 
and minute, the magnitude of the force is
In C.G.S. system the magnitude of the force is 100 dyne. In another system where fundamental physical quantities are kilogram, and minute, the magnitude of the force is
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Which is the correct unit for measuring nuclear radii
Which is the correct unit for measuring nuclear radii
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physics-
Student I, II and III perform an experiment for measuring the acceleration due to gravity (g) using a simple pendulum. They use different lengths of the pendulum and/or record time for different number of oscillations. The observations are shown in the table
Least count for length = 0.1 cm.
Least count for time = 0.1 s.
If EI,EII and EIII are the percentage errors in g, 
for students I, II and III respectively.
Student I, II and III perform an experiment for measuring the acceleration due to gravity (g) using a simple pendulum. They use different lengths of the pendulum and/or record time for different number of oscillations. The observations are shown in the table
Least count for length = 0.1 cm.
Least count for time = 0.1 s.
If EI,EII and EIII are the percentage errors in g, for students I, II and III respectively.
physics-General
physics-
newton-second is the unit of
newton-second is the unit of
physics-General
chemistry-
In Williamson’s synthesis
In Williamson’s synthesis
chemistry-General
Maths-
The angle between the lines x
and x cos 
where 
is
Hence θ=α−β
The angle between the lines x and x cos where is
Maths-General
Hence θ=α−β
maths-
The wheel rim has a diameter of 15 Metres. Which of the following is closest to the inside circumference of the Tyre designed to fit on the rim. ?
The wheel rim has a diameter of 15 Metres. Which of the following is closest to the inside circumference of the Tyre designed to fit on the rim. ?
maths-General
