The cylindrical tube of a spray pump has radius R, one end of which has n fine holes,
The cylindrical tube of a spray pump has radius R, one end of which has n fine holes, each of radius r. If the speed of the liquid in the tube is V, the speed […]
Properties of Bulk Matter
The two ends of a metal rod are maintained at temperatures 100°C and 110°C.
The two ends of a metal rod are maintained at temperatures 100°C and 110°C. The rate of heat flow in the rod is found to be 4.0 J/s. If the ends are maintained at temperatures […]
On observing light from three different stars P, Q and R, it was found that intensity
On observing light from three different stars P, Q and R, it was found that intensity of violet colour is maximum in the spectrum of P, the intensity of green colour is maximum in the […]
A wind with speed 40 m/s blows parallel to the roof of a house. The area of the roof
A wind with speed 40 m/s blows parallel to the roof of a house. The area of the roof is 250 m². Assuming that the pressure inside the house is atmospheric pressure, the force exerted […]
The approximate depth of an ocean is 2700 m. The compressibility of water is
The approximate depth of an ocean is 2700 m. The compressibility of wate4r is 45.4×10⁻¹¹ Pa⁻¹ and density of water is 10³ kg/m³. What fractional compression of water will be obtained at the bottom of […]
Steam at 100⁰C is passed into 20 g of water at 10°C. When water acquires a temperature
Steam at 100⁰C is passed into 20 g of water at 10°C. When water acquires a temperature of 80°C, the mass of water present will be[Take specific heat of water=1 cal g⁻¹ °C⁻¹ and latent […]
Copper of fixed volume V is drawn into wire of length l. When this wire is subjected
Copper of fixed volume V is drawn into wire of length l. When this wire is subjected to a constant force F, the extension produced in the wire is Δl. Which of the following graphs […]
Certain quantity of water cools from 70⁰ C to 60⁰C in the first 5 minutes and to 54⁰C
Certain quantity of water cools from 70⁰ C to 60⁰C in the first 5 minutes and to 54⁰ C in the next 5 minutes. The temperature of the surroundings is
Options
(a) 45⁰ C […]
A certain number of spherical dropes of a liquid of radius r coalesce to form a single
A certain number of spherical dropes of a liquid of radius r coalesce to form a single drop of radius R and volume V. If T is the surface tension of the liquid, then
If the rise in height of capillary of two tubes is 6.6 cm and 2.2 cm
If the rise in height of capillary of two tubes is 6.6 cm and 2.2 cm, then the ratio of the radius is
Options
(a) (2:1) (b) 1:√2 (c) (1:2) (d) (1:3)
Correct […]