What is the total allocation for PM KISAN in the Union

The half-life of a radioactive substance is 10 days. The time in which only 1/8th of the original substance remains is:

Which of the following phenomena cannot be explained by the wave theory of light?

What is the speed of sound in air at room temperature (20°C)?  

A particle is moving in a uniform circular motion with constant speed v along a circle of radius r. The acceleration-of the particle is –

Which of the following quantities is a scalar?  

Which of the following correctly ranks molecular speeds at a fixed temperature?

The time period of a second’s pendulum is –

When the speed of car is doubled, then what will be the braking force of the car to stop it in the same distance?

A train runs along an unbanked circular track of radius of 10 m at speed of 36 km/h. The mass of the train is 1⁶ kg.

In an electric motor, energy is transformed from: