SSLC (English Medium) इयत्ता ९ - Tamil Nadu Board of Secondary Education Question Bank Solutions for Science

A body moves with an initial velocity of 5ms^-1 and accelerates at 2ms ^-2. Its velocity after 10s is ______.

The area under the velocity-time graph represents ______.

If the final velocity is less than the initial velocity the acceleration is ______.

If final velocity is equal to initial velocity the value of acceleration is ______.

At the highest point, when a body is thrown vertically upwards, the velocity is ______.

A body moves in a circular pattern the ______ of velocity does not change but changes.

If the velocity of the body decreases with time the acceleration is negative and the motion is called decelerated motion.

The initial velocity of a freely falling object is zero as it is released from rest.

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: An object can have constant speed but the variable velocity
Reason: Speed is a scalar but velocity is a vector.

Give the formula for each.

1. elation between initial, final velocity, acceleration, and displacement in a uniformly accelerated straight-line motion.
2. Relation between initial, final velocity, acceleration & time in a uniformly accelerated straight-line motion.
3. Relation between initial velocity, acceleration, displacement, and time.

Absolute Pressure is zero-referenced against a ______.

Psi stands for ______.

The absolute pressure is zero-referenced against atmospheric pressure. 

How will you find the absolute pressure?

The resistance of a straight conductor is independent of ______.

What is the maximum resistance one can make with ten 1Ω resistors?

Two conductors of resistance 2 R and R are connected in series in a battery circuit. The ratio of heat developed In them is ______.

The resistance of a conductor is R. If Its length is doubled, then its new resistance will be ______.

Resistors are connected in series if the resistance of the electric circuit is to be ______.