Maths-
General
Easy
Question
Unit vector making angles 
with 
direction is :
- Impossible to get such a vector
The correct answer is: Impossible to get such a vector
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If the three vectors 2i-j+k, i+2
j-3k and 3i+j+5k are coplanar then =
If the three vectors 2i-j+k, i+2 j-3k and 3i+j+5k are coplanar then =
Maths-General
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If a = 2i+4j-5k, b= i+j+k, c = j+2k then the unit vector parallel to a+b+c is
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The ratio in which the line segment joining 
+ 
+ 
and 
+ 
+ 
is divided by x
+y
+z
is
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Maths-General
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A body initially at rest, starts moving along x-axis in such a way so that its acceleration vs displacement plot is as shown in figure. The maximum velocity of particle is
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Physics-General
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Each of the three graphs represents acceleration versus time for an object that already has a positive velocity at time t1. Which graphs show an object whose speed is increasing for the entire time interval between t1 and t2?
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Physics-General
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The graph to the right is a plot of position versus time. For which labeled region is the velocity positive and the acceleration negative?
The graph to the right is a plot of position versus time. For which labeled region is the velocity positive and the acceleration negative?
Physics-General
Physics-
A body moves with velocity 
where x is its position The net force acting on body is zero at:
A body moves with velocity where x is its position The net force acting on body is zero at:
Physics-General
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After firing, a bullet is found to move at an angle of 37° to horizontal. Its acceleration is 10 m/ s 2 downwards. Find the component of acceleration in the direction of the velocity.
After firing, a bullet is found to move at an angle of 37° to horizontal. Its acceleration is 10 m/ s 2 downwards. Find the component of acceleration in the direction of the velocity.
Physics-General
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A gas bubble oscillates with a time period T proportional to Pa db Ec where P is pressure, d is the density and E is the energy. The values of a, b & c are :
A gas bubble oscillates with a time period T proportional to Pa db Ec where P is pressure, d is the density and E is the energy. The values of a, b & c are :
Physics-General
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The figure shows a simple harmonic progressive transverse wave, progressing towards the right. The particle having the maximum acceleration directed downwards is represented by
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Physics-General
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Two graphs of the same harmonic wave are shown below. The graph (1) on the left shows the displacement of wave y, as a function of position x for a given instant of time. The graph (2) on the right shows the displacement of wave as a function of time 't' for a given position. The speed of the wave is
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Physics-General
Physics-
The prong of a electrically operated tuning fork is connected to a long string 
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Physics-General
Physics-
The wave motion has the function 
The graph in the figure w sin (shows how the displacement y at a fixed point varies with time t. Which one of the labelled points shows a displacement equal to that at the position 
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Physics-General
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A small bob attached to a light inextensible thread of length l has a periodic time T when allowed to vibrate as a simple pendulum. The thread is now suspended from a fixed end O of a vertical rigid rod of length 
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Physics-General
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Two particles undergo SHM along parallel lines with the same time period (T) and equal amplitudes. At a particular instant, one particle is at its extreme position while the other is at its mean position. They move in the same direction. They will cross each other after a further time 
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Physics-General
