A piece of granite floats at the interface of mercury and water. If the densities of granite, water and mercury are \( \rho, \rho_1, \rho_2 \) respectively, the ratio of volume of granite in water to that in mercury is
A piece of granite floats at the interface of mercury and water. If the densities of granite, water and mercury are \( \rho, \rho_1, \rho_2 \) respectively, the ratio of volume of granite in water to that in mercury is
Show Hint
- \( \frac{\rho_2 - \rho}{\rho - \rho_1} \)
- \( \frac{\rho_2 + \rho}{\rho_1 + \rho} \)
- \( \frac{\rho_1\rho_2}{\rho} \)
- \( \frac{\rho_1}{\rho_2} \)
The Correct Option is A
Solution and Explanation
Top Questions on Buoyancy and Floatation
- The laboratory analysis data obtained from the core is as follows:
Weight of clean dry core in air = 30 g
Weight of core completely saturated with oil = 32 g
Weight of saturated core completely immersed in oil = 24 g
If the density of oil used for saturation of core during the experiment is 0.88 g/cc, then the effective porosity of the core is _________% (rounded off to two decimal places).
- GATE PE - 2026
- Petroleum Engineering
- Buoyancy and Floatation
- A piece of granite floats at the interface of mercury and water contained in a beaker as shown in the figure. If the densities of granite, water, and mercury are \( \rho \), \( \rho_1 \), and \( \rho_2 \) respectively, the ratio of the volume of granite in water to the volume of granite in mercury is:
- WBJEE - 2025
- Physics
- Buoyancy and Floatation
- A wooden block of mass 6 kg is pulled across a rough surface by a 54 N force against a friction force \( F \). The acceleration of the block is \( 6 \, \text{m/s}^2 \). Then the value of friction force \( F \) is:
- JEECUP - 2024
- Physics
- Buoyancy and Floatation
- Want to practice more? Try solving extra ecology questions todayView All Questions
Questions Asked in WBJEE exam
Manufacturers supply a zener diode with zener voltage \( V_z=5.6\,\text{V} \) and maximum power dissipation \( P_{\max}=\frac14\,\text{W} \). This zener diode is used in the circuit shown. Calculate the minimum value of the resistance \( R_s \) so that the zener diode will not burn when the input voltage is \( V_{in}=10\,\text{V} \). 
- WBJEE - 2026
- Zener Diodes
Two charges \( +q \) and \( -q \) are placed at points \( A \) and \( B \) respectively which are at a distance \( 2L \) apart. \( C \) is the midpoint of \( AB \). The work done in moving a charge \( +Q \) along the semicircle CSD (\( W_1 \)) and along the line CBD (\( W_2 \)) are 
- WBJEE - 2026
- electrostatic potential and capacitance
