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Easy
Question
On a particle moving on a circular path with a constant speed v, light is thrown from a projectors placed at the centre of the circular path. The shadow of the particle is formed on the wall. the velocity of shadow up the wall is
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The correct answer is:
Related Questions to study
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A layered lens as shown in the figure is made of two materials indicated by different shades. A point object is placed on its axis. The lens will form.
A layered lens as shown in the figure is made of two materials indicated by different shades. A point object is placed on its axis. The lens will form.
physics-General
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When the prism is in the minimum deviation position (Figure). Choose the correct one.
When the prism is in the minimum deviation position (Figure). Choose the correct one.
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The inclined plane OA rotates in vertical plane about a horizontal axis through = 3 rad/sec. As it passes the 
O with a constant counter clockwise velocity 
= 0, a small mass m = 1 kg is placed upon it at a radial distance r =position 0.5 m. If the mass is observed to be at rest with respect to inclined plane. = 37° between the mass The value of static friction force at & the incline plane.
The inclined plane OA rotates in vertical plane about a horizontal axis through = 3 rad/sec. As it passes the O with a constant counter clockwise velocity = 0, a small mass m = 1 kg is placed upon it at a radial distance r =position 0.5 m. If the mass is observed to be at rest with respect to inclined plane. = 37° between the mass The value of static friction force at & the incline plane.
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A skier plans to ski a smooth fixed hemisphere of radius R. He starts from at which heqrest from a curved smooth surface of height (R/4). The angle leaves the hemisphere is
A skier plans to ski a smooth fixed hemisphere of radius R. He starts from at which heqrest from a curved smooth surface of height (R/4). The angle leaves the hemisphere is
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A smooth semicircular tube AB of radius r is fixed in a vertical plane r asp r and weight W= pand contains a heavy flexible chain of length shown. Assuming a slight disturbance to start the chain in motion, the velocity v with which it will emerge from the open end B of the tube is
A smooth semicircular tube AB of radius r is fixed in a vertical plane r asp r and weight W= pand contains a heavy flexible chain of length shown. Assuming a slight disturbance to start the chain in motion, the velocity v with which it will emerge from the open end B of the tube is
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Block A in the figure is released from rest when the extension in the spring is 
The maximum downwards displacement of the block is
Block A in the figure is released from rest when the extension in the spring is The maximum downwards displacement of the block is
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A bead of mass 5kg is free to slide on the horizontal rod AB. They are connected to two identical springs of natural length h ms as shown. If initially bead was at O & M is vertically below L then, velocity of bead at point N will be
A bead of mass 5kg is free to slide on the horizontal rod AB. They are connected to two identical springs of natural length h ms as shown. If initially bead was at O & M is vertically below L then, velocity of bead at point N will be
physics-General
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A constant force produces maximum velocity V on the block connected to the spring of force constant K as shown in the fig. When the force constant of spring becomes 4K, the maximum velocity of the block is
A constant force produces maximum velocity V on the block connected to the spring of force constant K as shown in the fig. When the force constant of spring becomes 4K, the maximum velocity of the block is
physics-General
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Potential energy and position for a conservative force are plotted in graph shown. Then force position graph can be
Potential energy and position for a conservative force are plotted in graph shown. Then force position graph can be
physics-General
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A block ‘A’ of mass 45 kg is placed on a block ‘B’ of mass 123 kg. Now block ‘B’ is displaced by external agent by 50 cm horizontally towards right. During the same time block ‘A’ just reaches to the left end of block B. Initial & final position are shown in figure. Refer to the figure & find the work done by frictional force on block A in ground frame during above time. 
A block ‘A’ of mass 45 kg is placed on a block ‘B’ of mass 123 kg. Now block ‘B’ is displaced by external agent by 50 cm horizontally towards right. During the same time block ‘A’ just reaches to the left end of block B. Initial & final position are shown in figure. Refer to the figure & find the work done by frictional force on block A in ground frame during above time.
physics-General
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A sphere of mass m is kept between two inclined walls, as shown in the figure. If the coefficient of friction between each wall and the sphere is zero, then the ratio of normal reaction 
offered by the walls 1 and 2 on the sphere will be
A sphere of mass m is kept between two inclined walls, as shown in the figure. If the coefficient of friction between each wall and the sphere is zero, then the ratio of normal reaction offered by the walls 1 and 2 on the sphere will be
physics-General
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Two wedges, each of mass m, are placed next to each other on a flat floor. A cube of mass M is balanced on the wedges as shown. Assume no friction between 
the cube and the wedges, but a coefficient of static friction < 1 between the wedges and the floor. What is the largest M that can be balanced as shown without motion of the wedges?
Two wedges, each of mass m, are placed next to each other on a flat floor. A cube of mass M is balanced on the wedges as shown. Assume no friction between the cube and the wedges, but a coefficient of static friction < 1 between the wedges and the floor. What is the largest M that can be balanced as shown without motion of the wedges?
physics-General
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In the Figure, AB and BK represent incident and reflected rays. If angle BCF = 35º. Then ÐBFP. will be equal to ____ degrees.
In the Figure, AB and BK represent incident and reflected rays. If angle BCF = 35º. Then ÐBFP. will be equal to ____ degrees.
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An arrangement of the masses and pulleys is shown in the figure. Strings connecting masses A and B with pulleys are horizontal and all pulleys and strings are light. Friction coefficient between the surface and the block B is 0.2 and between blocks A and B is 0.7. The system is released from rest (use g = 10 
).
An arrangement of the masses and pulleys is shown in the figure. Strings connecting masses A and B with pulleys are horizontal and all pulleys and strings are light. Friction coefficient between the surface and the block B is 0.2 and between blocks A and B is 0.7. The system is released from rest (use g = 10 ).
physics-General
physics-
The graph between 
where
is wavelength of incident light and stopping potential (V) of three metals having work functions 
and 
in an experiment of photo-electric effect is plotted as shown in the figure. Which of the following statements is correct?
The graph between where is wavelength of incident light and stopping potential (V) of three metals having work functions and in an experiment of photo-electric effect is plotted as shown in the figure. Which of the following statements is correct?
physics-General
