HSC Science Class 11 - Tamil Nadu Board of Secondary Education Question Bank Solutions for Physics

If the error in the measurement of the radius is 2%, then the error in the determination of the volume of the sphere will be ______

The length of a body is measured as 3.51 m, if the accuracy is 0.01m, then the percentage error in the measurement is ______

The measurement value of the length of a simple pendulum is 20 cm known with 2 mm accuracy. The time for 50 oscillations was measured to be 40 s within 1 s resolution. Calculate the percentage accuracy in the determination of acceleration due to gravity ‘g’ from the above measurement.

Define precision and accuracy. Explain with one example.

Explain in detail the various types of errors.

What do you mean by the propagation of errors? Explain the propagation of errors in addition and multiplication.

Force acting on the particle moving with constant speed is ______

The centrifugal force appears to exist ______

Choose the correct statement from the following.

If a person moving from pole to equator, the centrifugal force acting on him ______

What is the meaning of ‘pseudo force’?

Under what condition will a car skid on a leveled circular road?

A car takes a turn with a velocity of 50 ms^-1 on the circular road of a radius of curvature of 10 m. calculate the centrifugal force experienced by a person of mass 60 kg inside the car?

Two bodies of masses 15 kg and 10 kg are connected with light string kept on a smooth surface. A horizontal force F=500 N is applied to a 15 kg as shown in the figure. Calculate the tension acting in the string?

Imagine that the gravitational force between Earth and Moon is provided by an invisible string that exists between the Moon and Earth. What is the tension that exists in this invisible string due to Earth’s centripetal force? (Mass of the Moon = 7.34 × 10²² kg, Distance between Moon and Earth = 3.84 × 10⁸ m)

A football player kicks a 0.8 kg ball and imparts it a velocity of 12 ms^-1. The contact between the foot and ball is only for one-sixtieth of a second. Find the average kicking force.

A bob attached to the string oscillates back and forth. Resolve the forces acting on the bob into components. What is the acceleration experienced by the bob at an angle θ?

Calculate the centripetal acceleration of the Moon towards the Earth.

Explain the need for banking of tracks.

Briefly explain ‘centrifugal force’ with suitable examples.