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A block of mass m is placed on a wedge. The wedge can be accelerated in four manners as (1), (2), (3), and (4) as shown in Fig. 6.364. If the normal reactions in situations (1), (2), (3), and (4) are
30
Sep
A block of mass m is placed on a wedge. The wedge can be accelerated in four manners as (1), (2), (3), and (4) as shown in Fig. 6.364. If the normal reactions in situations (1), (2), (3), and (4) are 2 3% A block of mass m is placed on a wedge. The wedge [...]
In figure, find moment of intertia of a plate having mass M, length l and width b about axes 1, 2, 3 and 4. Assume that C is the centre and mass is uniformly distributed
25
Sep
In figure, find moment of intertia of a plate having mass M, length l and width b about axes 1, 2, 3 and 4. Assume that C is the centre and mass is uniformly distributed 2 3 and 4. Assume that C is the centre and mass is uniformly distributed find moment of intertia of [...]
A steel ball of mass 2m suffers one dimensional elastic collision with a row of three steel balls each of mass m . If mass 2 m has collide with velocity v and the three balls numbered 1, 2, 3 were initially at rest, then after the collision
24
Sep
A steel ball of mass 2m suffers one dimensional elastic collision with a row of three steel balls each of mass m . If mass 2 m has collide with velocity v and the three balls numbered 1, 2, 3 were initially at rest, then after the collision 2 3 were initially at rest A [...]
Assertion : Four point masses each of mass m are placed at points 1, 2, 3 and 6 of a regular hexagon of side a. Then the gravitational field at the centre of hexagon is Gm/a^2 Reason : The field strength due to masses at 3 and 6 are cancelled out.
18
Sep
Assertion : Four point masses each of mass m are placed at points 1, 2, 3 and 6 of a regular hexagon of side a. Then the gravitational field at the centre of hexagon is Gm/a^2 Reason : The field strength due to masses at 3 and 6 are cancelled out. 2 3 and 6 [...]
The resultant of three vectors 1, 2, and 3 units whose directions are those of the sides of an equilateral triangle is at an angle of a. 30 with the first vector
17
Sep
The resultant of three vectors 1, 2, and 3 units whose directions are those of the sides of an equilateral triangle is at an angle of a. 30 with the first vector 2 and 3 units whose directions are those of the sides of an equilateral triangle is at an angle of a. 30 with [...]
Students 1,2, and 3 perform 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 following table . Least count for length
16
Sep
Students 1,2, and 3 perform 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 following table . Least count for length 2 A student performs an experiment to [...]
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2 ,
A student performs an experiment to determine the Young's modulus of a wire ,
by Searle's method. In a particular reading ,
exactly 2 m long ,
Students 1 ,
the student measures the extension in the length of the wire to be 0.8 mm with an uncertainity of 0.05 mm at a load of exactly 1.0 kg. The student also measures the diameter of the wire ,
A physical quantity x is calculated from x = ab^2 / root c. Calculate the percentage error in measuring x when the percentage errors in measuring a, b, and c are 4, 2, and 3%, respectively.
15
Sep
A physical quantity x is calculated from x = ab^2 / root c. Calculate the percentage error in measuring x when the percentage errors in measuring a, b, and c are 4, 2, and 3%, respectively. 2 A physical quantity x is calculated from x = ab^2 / root c. Calculate the percentage error in [...]
Infinite charges of magnitude q each are lying at x = 1, 2, 4, 8….meter on x aixs. The value of intensity of electric field at point x = 0 due to these charges will be
15
Sep
Infinite charges of magnitude q each are lying at x = 1, 2, 4, 8….meter on x aixs. The value of intensity of electric field at point x = 0 due to these charges will be 2 4 8....meter on x aixs. The value of intensity of electric field at point x = 0 due [...]
Five balls numbered 1, 2, 3, 4, and 5 are suspended using separated threads. The balls (1 , 2), (2, 4 ) and (4, 1) show electrostatic attraction while balls (2,3) and (4,5) show repulsion. Therefore, ball 1 must be
15
Sep
Five balls numbered 1, 2, 3, 4, and 5 are suspended using separated threads. The balls (1 , 2), (2, 4 ) and (4, 1) show electrostatic attraction while balls (2,3) and (4,5) show repulsion. Therefore, ball 1 must be 1) show electrostatic attraction while balls (2 2 3) and (4 3% 4 4 ) [...]
A cylindrical vessel of 90 cm height is kept filled up to the brim. It has four holes 1,2,3 and 4 which are, respectively, at heights of 20 cm,30 cm,45 cm and 50 cm from the horizontal floor PQ. The water falling at the maximum horizontal distance from the vessel comes from
14
Sep
A cylindrical vessel of 90 cm height is kept filled up to the brim. It has four holes 1,2,3 and 4 which are, respectively, at heights of 20 cm,30 cm,45 cm and 50 cm from the horizontal floor PQ. The water falling at the maximum horizontal distance from the vessel comes from 2 3 and [...]