SSLC (English Medium) Class 9 - Tamil Nadu Board of Secondary Education Question Bank Solutions

A quantity that has both magnitude and direction is ______.

Choose the correct option.

Distance travelled by a freely falling body is proportional to ______.

If the displacement-time graph of a particle is parallel to the time axis, the velocity of the particle is ______.

Displacement is the ______ distance covered by a body.

Displacement can be zero but distance never.

Displacement magnitude can be greater than the distance traveled by the object.

Assertion: If the displacement of the body is zero, the distance covered by it may not be zero.
Reason: Displacement is a vector & distance is a scalar quantity.

The movement of the positive charge is called ______.

What do you know about Michael Faraday?

Assertion (A): A magnetic field exerts a force on a moving charge in the same direction as the direction of the field itself.
Reason (R): The direction of force is given by Fleming’s left-hand rule.

A current-carrying conductor of a certain length, kept perpendicular to the magnetic field experiences a force F. What will be the force if the current is increased four times, the length is halved and the magnetic field is tripled?

A ray of light is incident towards a plane mirror at an angle of 30° with the mirror surface. What will be the angle of reflection?

For a spherical mirror, ______ is true.

A spherical mirror whose reflecting surface is curved outwards is called ______ mirror.

The image formed in a plane mirror is always inverted.

The minimum length of the mirror required to see the full image of the person is half ‘ of his height.

The distance from the center of curvature of the mirror to the pole is called the focal length of the mirror.

Explain why a ray of light passing through the center of curvature of a concave mirror, gets reflected along with the same pattern.

How tall does a mirror have to be to fit an entire person’s body?