Physics

Q.

A train starting from a railway station and moving with uniform acceleration attains a speed of $40km{h}^{-1}$ in $10minutes$. Find its acceleration in the units of $m{s}^{-2}$.

Q.

A farmer moves along the boundary of a square field of side 10m in 40 s. What will be the magnitude of displacement of the farmer at the end of 2 minutes 20 seconds from his initial position?

Q.

An artificial satellite is moving in a circular orbit of a radius $42250km$. Calculate its speed if it takes $24$ hours to revolve around the earth.

Q.

How to convert kilometre per hour to metre per second

Q.

Derive the formula for Celsius to Fahrenheit?

Q.

Define the potential difference between two points.

Q.

State similarities and differences between laboratory thermometer and clinical thermometer.

Q.

How do we convert 1 g/cm³ to kg/m³?

Q.

A cup contains $250g$ of water. Find the total positive charge present in the cup of water.

Q. State the characteristics of an image formed by a plane mirror.

Q.

In which directions does the sun rise and set?

Q.

What is the time taken by the light to travel from the Sun to the Earth?

1. 8 minutes

2. 10 minutes

3. 15 minutes

4. 3 minutes

Q.

Write the difference between uniform and non-uniform motion?

Q. Which is the nearest star to the Earth?

1. Alpha Centauri
2. Pole star
3. Sun
4. Sirius

Q.

Write the definition of regular reflection and irregular reflection.

Q. What is principal focus

Q. Explain sea breeze and land breeze? [5 MARKS]

Q.

Define physical quantity?

Q. The sun appears red during sunrise and sunset due to the of sunlight.

1. scattering
2. reflection
3. absorption

Q.

Define zeroth law of thermodynamics.

Q.

In torches, searchlights, and headlights of vehicles, the bulb is placed

1. between the pole and the focus of the reflector

2. very near to the focus of the reflector

3. between the focus and center of curvature of the reflector

4. at the center of curvature of the reflector

Q.

What are the advantages and disadvantages of a series combination?

Q. What is the full form of IMD?

1. Indian Management Department
2. Indian Meteorological Department
3. International Monetary Department
4. International Meteorological Department

Q.

Give reason for the statement

(I) Water droplets appear on the outer surface of a glass full of cold water?Why.

Q. What is centre of curvature?

Q.

What are the four Ways to Make an Electromagnet Stronger?

Q.

A car increases its speed from 20km/h to 50 km/h in 10s. Its acceleration is :

1. 30 m/s²

2. 3 m/s²

3. 18 m/s²

4. none of these

Q.

What is difference between rotatory motion and circular motion ?

Q.

What is the nature of light?

1. Light is a transverse electromagnetic wave that can be seen by humans.

2. Light does not have any nature

3. Light is a longitudinal wave.

4. Nature of light cannot be determined

Q.

What Is The English Meaning Of Surya Grahan And Chandra Grahan?