Physics - MOST IMPORTANT UP POLICE (Other Exams) Previous Year Questions

Three resistors of 4Ω, 10Ω and 12Ω are connected in parallel. What is the total resistance of the combination?

Sound cannot travel through ______.

Where is a lightning rod installed to protect a building from lightning?

A ball is thrown vertically upwards with a speed of 30 m/s. After 4 seconds, the magnitude of its displacement will be approximately ______. (take g = 9.8 m/s²)

What will be the maximum amount of work done by a 20 kW engine in 10 seconds?

______ refers to the time when a sound wave completes one oscillation under the density of a medium.

A machine does 1200 joules of work in 300 seconds. What is the power of the machine?

The total distance covered in total time is called ______.

If an object exerts a pressure of 1837.5 N/m² on an area of 2400 cm², what will be the mass of the object? (take g = 9.8 m/s²).

The density of a substance is 12 kg/m³. If its mass is 144 kg, what will be the volume of the substance?

1 Joule/second is equivalent to what?

Sound cannot be heard on the moon like on Earth, because ______.

A substance of 117 kg has a volume of 9 m³. What will be the density of the substance?

When the time taken to complete a given amount of work increases, then-

Negative acceleration is in the opposite direction of ______.

Calculate the output energy of an electric motor with 60% efficiency that uses 2 kJ of electrical energy.

The speed of sound depends on the properties of the medium such as ______.

The acceleration due to gravity on the moon is 1/6th of that on Earth. Then, the weight of an object weighing 12N on Earth will be ______ on the moon.

The rate of change of displacement is called ______.

Which of the following is not an example of acceleration opposite to the direction of motion?