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Related Questions to study
Physics-
Assertion : Two similar trains are moving along the equatorial line with the same speed but in opposite direction. They will exert equal pressure on the rails.
Reason : In uniform circular motion of magnitude of acceleration remains constant but the direction continuously changed.
Assertion : Two similar trains are moving along the equatorial line with the same speed but in opposite direction. They will exert equal pressure on the rails.
Reason : In uniform circular motion of magnitude of acceleration remains constant but the direction continuously changed.
Physics-General
Physics-
Assertion : As the frictional force increases, the safe velocity limit for taking a turn on an unbanked road also increases.
Reason : Banking of roads will increase the value of limiting velocity.
Assertion : As the frictional force increases, the safe velocity limit for taking a turn on an unbanked road also increases.
Reason : Banking of roads will increase the value of limiting velocity.
Physics-General
Physics-
A ball is rolled off the edge of horizontal table at a speed of 4m/sec. It hits the ground after 0.4 second. Which statement given below is true :
A ball is rolled off the edge of horizontal table at a speed of 4m/sec. It hits the ground after 0.4 second. Which statement given below is true :
Physics-General
physics-
A string of length L is fixed at one end and carries a mass M at the other end. The string makes 2/p revolutions per second around the vertical axis through the fixed end as shown in the figure, then tension in the string is :
A string of length L is fixed at one end and carries a mass M at the other end. The string makes 2/p revolutions per second around the vertical axis through the fixed end as shown in the figure, then tension in the string is :
physics-General
Physics-
A car moves on a circular road. It describes equal angles about the centre in equal intervals of time. Which of the following statement about the velocity of the car is true :
A car moves on a circular road. It describes equal angles about the centre in equal intervals of time. Which of the following statement about the velocity of the car is true :
Physics-General
physics-
A point mass m is suspended from a light thread of length l, fixed at O, is whirled in a horizontal circle at constant speed as shown. From your point of view, stationary with respect to the mass, the forces on the mass are :
A point mass m is suspended from a light thread of length l, fixed at O, is whirled in a horizontal circle at constant speed as shown. From your point of view, stationary with respect to the mass, the forces on the mass are :
physics-General
physics-
Figure shows four paths for a kicked football. Ignoring the effects of air on the flight, rank the paths according to initial horizontal velocity component, highest first :
Figure shows four paths for a kicked football. Ignoring the effects of air on the flight, rank the paths according to initial horizontal velocity component, highest first :
physics-General
Physics-
A stone is just released from the window of a train moving along a horizontal straight track. The stone will hit the ground following :
A stone is just released from the window of a train moving along a horizontal straight track. The stone will hit the ground following :
Physics-General
Physics-
Two racing cars of masses m1 and m2 are moving in circles of radii r1 and r2 respectively. Their speed are such that each makes a complete circle in the same duration of time t. The ratio of the angular speed of the first to the second car is :
Two racing cars of masses m1 and m2 are moving in circles of radii r1 and r2 respectively. Their speed are such that each makes a complete circle in the same duration of time t. The ratio of the angular speed of the first to the second car is :
Physics-General
Physics-
A ball is projected with kinetic energy E at an angle of 45
to the horizontal. At the highest point during its flight, its kinetic energy will be :
A ball is projected with kinetic energy E at an angle of 45 to the horizontal. At the highest point during its flight, its kinetic energy will be :
Physics-General
Maths-
A fair die is tossed three times. Given that the sum of the first two tosses equals the third. The probability that at least one ‘2’ has turned up, is equal to
A fair die is tossed three times. Given that the sum of the first two tosses equals the third. The probability that at least one ‘2’ has turned up, is equal to
Maths-General
maths-
On a wall , a traiangle is drawn as shown in figure suppose you have thrown an arrow on the target triangle and it sticks at the interior of the triangle. If it sticks at a point P (x,y) with x<y, then you will win the game. The probability that you win the game ?
On a wall , a traiangle is drawn as shown in figure suppose you have thrown an arrow on the target triangle and it sticks at the interior of the triangle. If it sticks at a point P (x,y) with x<y, then you will win the game. The probability that you win the game ?
maths-General
Maths-
An integer from the set of first 100 natural numbers is selected at random .The probability that the number satisfying the inequality 
is
An integer from the set of first 100 natural numbers is selected at random .The probability that the number satisfying the inequality is
Maths-General
Maths-
A bag contains a large number of white and black marbles in equal proportions. Two samples of 5 marbles are selected (with replacement) at random. The probability that the first sample contains exactly 1 black marble, and the second sample contains exactly 3 black marbles, is
A bag contains a large number of white and black marbles in equal proportions. Two samples of 5 marbles are selected (with replacement) at random. The probability that the first sample contains exactly 1 black marble, and the second sample contains exactly 3 black marbles, is
Maths-General
Maths-
If A and B are two events such that, 
is equal to
If A and B are two events such that, is equal to
Maths-General
