State three precautions you will take while measuring the volume of an irregular solid lighter than water, using a measuring cylinder. [3]
When does a body rotate? state one way to change the direction of rotation of a body .Give a suitable example to explain your answer
A thick plane mirror forms a multiple number of images, out of which the second image formed is the brightest. Why is the second image the brightest one?
state ohms law and write the condition in which law is beyed?
what is a relation between light year and astronomical unit and parsec .
calculate the height of a water column which will exert on its base the same same pressure as the 70 cm column of mercury.
( density of mercury = 13.6 g cm-3)
A bullet initially moving with a velocity 20m/s strikes a target and comes to rest after penetrating a distance 10 cm in the target. Calculate the retardation caused by the target.
A body travelling along a straight line tranversed one third of the total distance with a velocity 4 ms-1. The remaining part of the distance was covered with a velocity 2 ms-1 for half the time and with velocity 6ms-1 for the other half of time. What is the mean velocity averaged over the whole time of motion?
the order of magnitude of a physical quantity must express in proper unit. comment on this statement
A vehicle is acceleraring on a straight road. Its velocity at any instant is 30 km/hr, after 2 seconds, it is 33.6 km/hr and after further 2 seconds, it is 37.2 km/hr. Find the acceleration of vehicle in m/sec. Is the acceleration uniform?
Why is pressure a scalar quantity while thrust is a vector quantity?
Why do we jerk wet clothes before spreading them on a line?
Whay is electrolysis? explain with some diagrams
A force acts for 10s on a stationary body of mass 100kg after which the force ceases to act . The body moves through a distance of 100m in the next 5s . Calcluate
(i) the velocityacquired by the body,(ii) the acceleration produced by the force ,(iii)the magnitude of the force
State three precautions you will take while measuring the volume of an irregular solid lighter than water, using a measuring cylinder. [3]
When does a body rotate? state one way to change the direction of rotation of a body .Give a suitable example to explain your answer
A thick plane mirror forms a multiple number of images, out of which the second image formed is the brightest. Why is the second image the brightest one?
state ohms law and write the condition in which law is beyed?
what is a relation between light year and astronomical unit and parsec .
calculate the height of a water column which will exert on its base the same same pressure as the 70 cm column of mercury.
( density of mercury = 13.6 g cm-3)
A bullet initially moving with a velocity 20m/s strikes a target and comes to rest after penetrating a distance 10 cm in the target. Calculate the retardation caused by the target.
A body travelling along a straight line tranversed one third of the total distance with a velocity 4 ms-1. The remaining part of the distance was covered with a velocity 2 ms-1 for half the time and with velocity 6ms-1 for the other half of time. What is the mean velocity averaged over the whole time of motion?
the order of magnitude of a physical quantity must express in proper unit. comment on this statement
A vehicle is acceleraring on a straight road. Its velocity at any instant is 30 km/hr, after 2 seconds, it is 33.6 km/hr and after further 2 seconds, it is 37.2 km/hr. Find the acceleration of vehicle in m/sec. Is the acceleration uniform?
Why is pressure a scalar quantity while thrust is a vector quantity?
Why do we jerk wet clothes before spreading them on a line?
Whay is electrolysis? explain with some diagrams
A force acts for 10s on a stationary body of mass 100kg after which the force ceases to act . The body moves through a distance of 100m in the next 5s . Calcluate
(i) the velocityacquired by the body,(ii) the acceleration produced by the force ,(iii)the magnitude of the force