- 1(current)
Q. No.The two thigh bones (femurs), each of cross-sectional area \(10\) cm2 support the upper part of a human body of mass \(40\) kg. The average pressure sustained by the femurs is:
1. \(0.2\times 10^{5}\) Nm–2
2. \(2\times10^{5}\) Nm–2
3. \(20\times10^{5}\) Nm–2
4. \(20\times10^{6}\) Nm–2
Pressure on a swimmer \(10\) m below the surface of a lake is:
(Atmospheric pressure= \(1.01\times10^{5}\) Pa, density of water = \(1000\) kg/m3 and \(g=10\) m/s2)
| 1. | \(5\) atm | 2. | \(4\) atm |
| 3. | \(2\) atm | 4. | \(3\) atm |
| 1. | \(8~\text{km}\) | 2. | \(5~\text{km}\) |
| 3. | \(7~\text{km}\) | 4. | \(6~\text{km}\) |
1. \(4.12\times 10^{4}~\text{N}\)
2. \(4.12\times 10^{5}~\text{N}\)
3. \(5.12\times 10^{5}~\text{N}\)
4. \(5.12\times 10^{4}~\text{N}\)
Two syringes of different cross-sections (without needles) filled with water are connected with a tightly fitted rubber tube filled with water. Diameters of the smaller piston and larger piston are \(1.0\) cm and \(3.0\) cm respectively. Force exerted on the larger piston when a force of \(10\) N is applied to the smaller piston:
1. \(80\) N
2. \(90\) N
3. \(10\) N
4. \(20\) N
1. \(0.67~\text{cm}\)
2. \(6.7~\text{cm}\)
3. \(67~\text{cm}\)
4. \(6.3~\text{cm}\)
1. \(1.9\times 10^{6}~\text{Pa}~\text{and}~1400~\text{N}\)
2. \(1.9\times 10^{4}~\text{Pa}~\text{and}~1580~\text{N}\)
3. \(19\times 10^{5}~\text{Pa}~\text{and}~1570~\text{N}\)
4. \(1.9\times 10^{5}~\text{Pa}~\text{and}~1470~\text{N}\)
- 1(current)
Q. No.
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