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- How alpha, beta and gamma emissions behave in an electric field and magnetic field? G2/G3
Alpha, beta and gamma emissions behave differently in electric field and magnetic field, depending on charge, mass and speed. In general, the charge of the particle will determine the direction of deflection, and the mass will affect how much deflection. In an electric field, due to laws of electrostatic (like charges repel, unlike charges attract) the charged particles of alpha and beta will be deflected in opposite direction. In a magnetic field, you can determine the direction of deflection using FLHR. View the explanation to have a better understanding.
- Time taken for the temperature of the oil to rise by 10oC?
Answer: Option A Video explanation
- Normal force P, Q and friction at Q, which force(s) will increase as the man climbs up the ladder?
When a body is in equilibrium, there are two conditions. 1) Net moment is zero: POM, anticlockwise moment = clockwise moment 2) Net force is zero: total upward forces = toward downward forces Answer: Option D View the explanation:
- What happens to the reading on the electronic balance when current flow through the wire?
We are all familiar to applying FLHR to the current-carrying wire. But actually there is an equal and opposite force acting on the magnet too! Magnetic force is an action-reaction pair (Newton’s 3rd Law) View the video explanation What happens to the readings on the electronic balance when currents flow through the wire? https://youtu.be/6R32DsGNkic
- Converging lens - Which shows the image formed correctly?
Answer: Option A View the explanation Click here to view the basic concepts of converging lens https://www.sgphysicstuition.com/post/converging-lens-overview
- Which has higher specific heat capacity and latent heat of fusion?
Answers: Option C View the explanation
- Finding the density of the alloy
Answer: Option C View the explanation
- What is the acceleration of the 10kg block if the string breaks
Answer: Option D View the explanation
- Speed-time graph of water rocket
Answer: Option C View the explanation
- Magnet falls through solenoid, what is the direction of the induced current? (Pure Physics)
Answer: Option C View explanation
