Physics
A boy travels a distance 150 m in 1 minute. His speed is:
- 150 m s-1
- 2.5 m s-1
- 25 m s-1
- 9 m s-1
Related Questions
A block of wood of density 0.8 g cm-3 has a volume of 60 cm3. The mass of block will be:
- 60.8 g
- 75 g
- 48 g
- 0.013 g
The density of a substance …………… with the increase in the temperature.
- increases
- decreases
- remains same
- none of the above
Assertion (A): The density of water decreases when it is cooled from 4 °C to 0 °C.
Reason (R): Volume of water increases in cooling from 4 °C to 0 °C.
- Both A and R are true and R is the correct explanation of A
- Both A and R are true and R is not the correct explanation of A
- Assertion is false but reason is true
- Assertion is true but reason is false