Posts

Showing posts with the label Physics Numericals

A thin solid disk of mass 1 kg is rotating along its diameter axis at the speed of 1800 rpm. An external torque of 25π Nm is applied for 40 seconds, increasing the speed to 2100 rpm. Find the diameter of the disk.

-
Image
  ⚙️ A Thin Rotating Disk – Torque & Diameter Problem | Doubtify JEE 📌 Question: A thin solid disk of mass 1 kg is rotating along its diameter axis at the speed of 1800 rpm . An external torque of 25π Nm is applied for 40 seconds , increasing the speed to 2100 rpm . Find the diameter of the disk. 📸 Question Image:
Post a Comment
Read more

A 3 m long wire of radius 3 mm shows an extension of 0.1 mm when loaded vertically by a mass of 50 kg in an experiment to determine Young's modulus. The value of Young’s modulus of the wire as per this experiment is P × 10¹¹ N/m², where the value of P is: (Take g = 3π m/s²)

-
Image
  🧪 Young’s Modulus from Wire Extension | JEE Physics | Doubtify 📌 Question: A 3 m long wire of radius 3 mm shows an extension of 0.1 mm when loaded vertically by a mass of 50 kg in an experiment to determine Young's modulus. The value of Young’s modulus of the wire as per this experiment is P × 10¹¹ N/m² , where the value of P is: (Take g = 3π m/s²) 🖼️ Question Image:
Post a Comment
Read more

A monatomic gas having γ = 5/3 is stored in a thermally insulated container and the gas is suddenly compressed to (1/8)ᵗʰ of its initial volume. The ratio of final pressure and initial pressure is:

-
Image
  🔥 Adiabatic Compression of Monatomic Gas | Thermodynamics | JEE Physics | Doubtify 📌 Question: A monatomic gas having γ = 5 3 \gamma = \frac{5}{3} ​ is stored in a thermally insulated container , and the gas is suddenly compressed to 1 8 th \frac{1}{8}^\text{th} of its initial volume. What is the ratio of final pressure to initial pressure ? 🖼️ Question Image:
Post a Comment
Read more