9702_s23_qp_13
A paper of Physics, 9702
Questions:
40
Year:
2023
Paper:
1
Variant:
3
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7
A device for spraying paint consists of a box with its faces horizontal and vertical. One of its vertical faces contains small holes. Paint is fed into the box under pressure via a vertical tube and exits through the holes as fine streams moving horizontally. paint in paint out through holes (only a few holes are shown...
3. Dynamics  →  3.3. Linear momentum and its conservation
3. Dynamics  →  3.2. Non-uniform motion
4. Forces, density and pressure  →  4.3. Density and pressure
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10
A perfectly elastic collision occurs between two objects X and Y. The mass of X is m and the mass of Y is 4m. Object X travels at speed v before the collision and speed 3v in the opposite direction after the collision. Object Y is stationary before the collision. X m before Y 4m v X m after Y 4m 3v What is the kinetic energy of Y after the collision?
3. Dynamics  →  3.3. Linear momentum and its conservation
5. Work, energy and power  →  5.2. Gravitational potential energy and kinetic energy
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17
An object of mass 0.40 kg is projected into the air and follows a curved path above horizontal ground. path of object ground 18 m object, mass 0.40 kg The object takes a time of 1.5 s to move along its path. The object lands a horizontal distance of 18 m from its initial position. Air resistance is negligible. What is the kinetic energy of the object at its maximum height?
5. Work, energy and power  →  5.2. Gravitational potential energy and kinetic energy
5. Work, energy and power  →  5.1. Energy conservation
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24
A source of plane polarised light is observed through two polarising filters. source of polarised light rotated anticlockwise rotated clockwise polarising filters observer The filters are positioned so that the source appears at its brightest. One of the filters is then rotated clockwise and the other filter is rotated anticlockwise through the same angle. How does the source appear when both filters have been rotated 90 and 180 from their initial positions?
7. Waves  →  7.5. Polarisation
8. Superposition  →  8.3. Interference
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25
The diagram shows a string stretched between fixed points X and Y. There is a stationary wave on the string. X Y R Q T S P The solid curve shows the string at a position of maximum displacement at time t0. The dashed curve shows the other position of maximum displacement. The straight central dashed line shows the mean position of the string. Point S on the string is directly above point P. Point T on the string is directly below point Q. Which statement is correct?
8. Superposition  →  8.1. Stationary waves
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33
A cell of negligible internal resistance is connected in series with a thermistor, a fixed resistor and an ammeter. The thermistor is placed in a beaker of water and the temperature of the water is slowly increased. A graph of current I against the temperature T of the thermistor is plotted. Which graph could show the variation of I with T ?
9. Electricity  →  9.3. Resistance and resistivity
10. D.C. circuits  →  10.3. Potential dividers
10. D.C. circuits  →  10.1. Practical circuits
Open
37
A potentiometer circuit is used to investigate the electromotive force (e.m.f.) of a cell X. X driver cell 2.0 V Q R P sliding contact resistance wire The e.m.f. of cell X is known to be approximately 0.50 V. The driver cell has negligible internal resistance and an e.m.f. of 2.0 V. The sliding contact is moved along the uniform resistance wire between ends Q and R to a point P where the reading on the galvanometer is zero. What is an expression for the approximate length QP?
10. D.C. circuits  →  10.3. Potential dividers
10. D.C. circuits  →  10.1. Practical circuits
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