Prove geometrically , if plane mirror is rotated at certain angle the reflected ray rotates twice the angle ?and Derive it?
A stop watch has 10 divisions graduated between 0 and 5s mark. what is its least count?
A ball is thrown vertically upwards from the top of a tower with an initial velocity of 19.6 m/s. the ball reaches the ground after 5 sec.Calculate-
1- the height of the tower? TAKE 'g' = 9.8 m/sec square
2- The velocity of the ball reaching the ground.
WHY IS ELECTRIC CURRENT A SCALAR QUANTITY?
Prove geometrically , if plane mirror is rotated at certain angle the reflected ray rotates twice the angle ?and Derive it?
A stop watch has 10 divisions graduated between 0 and 5s mark. what is its least count?
A ball is thrown vertically upwards from the top of a tower with an initial velocity of 19.6 m/s. the ball reaches the ground after 5 sec.Calculate-
1- the height of the tower? TAKE 'g' = 9.8 m/sec square
2- The velocity of the ball reaching the ground.
WHY IS ELECTRIC CURRENT A SCALAR QUANTITY?