(English Medium) ICSE Class 9 - CISCE Question Bank Solutions for Physics

Define atmospheric pressure diving suits. Does a diving suit create buoyancy?

Sound is a ______ wave and needs a material medium to travel.

What are magnetic and non-magnetic substances? Give two examples of each.

Which of the quantity-speed or velocity-gives the direction of motion of a body?

Calculate the pressure exerted by 0.8 m vertical length of alcohol of density 0.80 gcnr⁵ in SI units.
[Take g = 10 ms⁻²].

What is the pressure exerted by 75 cm vertical column of mercury of density 13600 kgm⁻³ in SI units?
[Take g = 9.8 ms⁻²].

What vertical height of water will exert a pressure of 333200 Pa? The density of water is 1000 kgnr³ and g = 9.8 ms⁻².

Pressure at the bottom of the sea at some particular place is 8968960 Pa. If the density of seawater is 1040 kgm³ calculate the depth of the sea. Take g = 9.8 ms⁻². Neglect the pressure of the atmosphere.

Calculate the equivalent height of mercury, which will exert as much pressure as 960 m of seawater of density 1040 kgm⁻³. The density of mercury is 13600 kgm⁻³.

The pressure of water on the ground floor, in a water pipe is 150000 Pa, whereas pressure on the fourth floor is 30000 Pa. Calculate the height of the fourth floor. Take g = 10 ms⁻².

The pressure of water on the ground floor is 160000 Pa. Calculate the pressure on the fifth floor, at a height of 15 m.

The normal pressure of air is 76 cm of mercury. Calculate the pressure in SI units.
[Density of mercury = 13600 kg/m³ and g = 10 m/s²]

Distinguish between
Magnetic and non-magnetic materials.

Name the SI unit of heat.

(i) Calculate the height of a water column which will exert on its base the same
Pressure as the 70 cm column of mercury.
(ii) Will the height of the water column change if the cross-section of the water column is made wider?