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ASSERTION A body can have acceleration even if its velocity is zero at a given instant of time. REASON A body is momentarily at rest when it reverses its direction of motion.
17
Oct
ASSERTION A body can have acceleration even if its velocity is zero at a given instant of time. REASON A body is momentarily at rest when it reverses its direction of motion. ASSERTION A body can have acceleration even if its velocity is zero at a given instant of time. REASON A body is momentarily [...]
A cyclist is moving on a circular track of radius 80 m with a velocity of 72 km/hr. He has to lean from he vertical approximately through an angle.
17
Oct
A cyclist is moving on a circular track of radius 80 m with a velocity of 72 km/hr. He has to lean from he vertical approximately through an angle. A cyclist is moving on a circular track of radius 80 m with a velocity of 72 km/hr. He has to lean from he vertical approximately [...]
The position of a particle moving in the xy-plane at any time t is given by x=(3t^2 -6t) m , y=( t^2 -2t) m. Select the correct statement about the moving particle from following . a) The acceleration of the particle is zero at t=0 second b) The velocity of the particle is zero at t=0 second c)The velocity of the particle is zero at t=1 second d)The velocity and acceleration of particle are never zero
17
Oct
The position of a particle moving in the xy-plane at any time t is given by x=(3t^2 -6t) m , y=( t^2 -2t) m. Select the correct statement about the moving particle from following . a) The acceleration of the particle is zero at t=0 second b) The velocity of the particle is zero at [...]
Assertion : For a given time interval average velocity is single valued while average speed can have many values. Reason : Velocity ls a vector quantity and speed is a scalar quantity.
17
Oct
Assertion : For a given time interval average velocity is single valued while average speed can have many values. Reason : Velocity ls a vector quantity and speed is a scalar quantity. Assertion : For a given time interval average velocity is single valued while average speed can have many values. Reason : Velocity ls [...]
Assertion : The speedometer of an automobile measure the average speed of the automobile. Reason : Average velocity is equal to total distance divided by total time taken.
17
Oct
Assertion : The speedometer of an automobile measure the average speed of the automobile. Reason : Average velocity is equal to total distance divided by total time taken. Assertion : The speedometer of an automobile measure the average speed of the automobile. Reason : Average velocity is equal to total distance divided by total time [...]
Statement-1 : The relative velocity between any two bodies moving in opposite direction is equal to sum of the velocities of two bodies. Statement-2 : Sometimes relative velocity between two bodies is equal to difference in velocities of the two bodies.
17
Oct
Statement-1 : The relative velocity between any two bodies moving in opposite direction is equal to sum of the velocities of two bodies. Statement-2 : Sometimes relative velocity between two bodies is equal to difference in velocities of the two bodies. 1. In a cricket match a batswoman hits a boundary 6 times out of [...]
13. In Q.1, Exercise 14.2, you were asked to prepare a frequency distribution table regarding the blood groups of 30 students of a class. Use this table to determine the probability that a student of this class, selected at random, has blood group AB.
17
Oct
13. In Q.1, Exercise 14.2, you were asked to prepare a frequency distribution table regarding the blood groups of 30 students of a class. Use this table to determine the probability that a student of this class, selected at random, has blood group AB. 13. In Q.1 Exercise 14.2 has blood group AB. selected at [...]
12. In Q.5, Exercise 14.2, you were asked to prepare a frequency distribution table, regarding the concentration of sulphur dioxide in the air in parts per million of a certain city for 30 days. Using this table, find the probability of the concentration of sulphur dioxide in the interval 0.12-0.16 on any of these days.
17
Oct
12. In Q.5, Exercise 14.2, you were asked to prepare a frequency distribution table, regarding the concentration of sulphur dioxide in the air in parts per million of a certain city for 30 days. Using this table, find the probability of the concentration of sulphur dioxide in the interval 0.12-0.16 on any of these days. [...]
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12. In Q.5 ,
Exercise 14.2 ,
find the probability of the concentration of sulphur dioxide in the interval 0.12-0.16 on any of these days. ,
regarding the concentration of sulphur dioxide in the air in parts per million of a certain city for 30 days. Using this table ,
you were asked to prepare a frequency distribution table ,
11. Eleven bags of wheat flour, each marked 5 kg, actually contained the following weights of flour (in kg): 4.97 5.05 5.08 5.03 5.00 5.06 5.08 4.98 5.04 5.07 5.00 Find the probability that any of these bags chosen at random contains more than 5 kg of flour.
17
Oct
11. Eleven bags of wheat flour, each marked 5 kg, actually contained the following weights of flour (in kg): 4.97 5.05 5.08 5.03 5.00 5.06 5.08 4.98 5.04 5.07 5.00 Find the probability that any of these bags chosen at random contains more than 5 kg of flour. 1. In a cricket match 11. Eleven [...]
10. Activity : Ask all the students in your class to write a 3-digit number. Choose any student from the room at random. What is the probability that the number written by her/him is divisible by 3? Remember that a number is divisible by 3, if the sum of its digits is divisible by 3.
17
Oct
10. Activity : Ask all the students in your class to write a 3-digit number. Choose any student from the room at random. What is the probability that the number written by her/him is divisible by 3? Remember that a number is divisible by 3, if the sum of its digits is divisible by 3. [...]