Physics-
General
Easy
Question
A particle of mass 
is rotating in a horizontal circle of radius 
and is attached to a hanging mass 
as shown in the figure. The speed of rotation required by the mass keep steady is
The correct answer is:
To keep the mass M steady, let T is the tension in the string joining the two. Then for particle 
For mass 
From Eqs. (i) and (ii)
Related Questions to study
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Figure shows the variation of the stopping potential (V0) with the frequency (v) of theincident radiations for two different photosensitive material M1 and M2 .What are the values of work functions for M1 and M2 respectively
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physics-General
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The respective angles of the flint and crown glass prisms are 
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From an inclined plane two particles are projected with same speed at same angle 
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Two particles 1 and 2 are projected with same speed 
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Two particles 1 and 2 are projected with same speed as shown in figure. Particle 2 is on the ground and particle 1 is at a height from the ground and at a horizontal distance from particle 2. If a graph is plotted between and for the condition of collision of the two then ( on -axis and on -axis
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a) Name the experiment for which the adjacent graph, showing the variation of intensity of scattered electrons with the angle of scatter ing (q) was obtained.
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b) Also name the important hypothesis that was confirmed by this experiment
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Three identical particles are joined together by a thread as shown in figure. All the three particles are moving in a horizontal plane. If the velocity of the outermost particle is 
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physics-General
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A ball of mass
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The ellipse 
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The ellipse and the straight line y = mx + c intersect in real points only if
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A boy throws a cricket ball from the boundary to the wicket-keeper. If the frictional force due to air cannot be ignored, the forces acting on the ball at the position X are respected by
A boy throws a cricket ball from the boundary to the wicket-keeper. If the frictional force due to air cannot be ignored, the forces acting on the ball at the position X are respected by
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Four capacitors are connected as shown in figure. The equivalent capacitance between 
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is
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A frictionless track 
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The effective capacitance between points 
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physics-General
