MCQOPTIONS
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MCQOPTIONS
This section includes 113 Mcqs, each offering curated multiple-choice questions to sharpen your JIPMER knowledge and support exam preparation. Choose a topic below to get started.
| 101. |
Mercury boils at 367° However, mercury thermometers are made such that they can measure temperature upto 500°C. This is done by |
| A. | maintaining vacuum aboves mercury column in the stem of the thermometer |
| B. | filling nitrogen gas at high pressure above the mercury column. |
| C. | filling oxygen gas at high pressure above the mercury column. |
| D. | filling nitrogen gas at low pressure above the mercury column. |
| Answer» C. filling oxygen gas at high pressure above the mercury column. | |
| 102. |
The displacement of a particle along the x-axis is given by x = a sin2 ω The motion of the particle corresponds to |
| A. | simple harmonic motion of frequency ω/π |
| B. | simple harmonic motion of frequency 3ω/2π |
| C. | non simple harmonic motion |
| D. | simple harmonic motion of frequency ω/2π |
| Answer» D. simple harmonic motion of frequency ω/2π | |
| 103. |
Two soap bubble coalesce. It is noticed that, whilst joined together, the radii of the two bubbles are a and b where a > b. Then the radius of curvature of interface between the two bubbles will be |
| A. | a – b |
| B. | a + b |
| C. | ab/(a – b) |
| D. | ab / (a + b) |
| Answer» D. ab / (a + b) | |
| 104. |
A cylinder rolls up an inclined plane, reaches some height and then rolls down (without slipping throughout these motions). The directions of the frictional force acting on the cylinder are |
| A. | up the incline while ascending and down the incline while descending. |
| B. | up the inline while ascending as well as descending. |
| C. | down the incline while ascending and up the incline while descending. |
| D. | down the incline while ascending as well as descending. |
| Answer» C. down the incline while ascending and up the incline while descending. | |
| 105. |
The upper half of an inclined p lane of inclination θ is perfectly smooth while the lower half rough. A block starting from rest at the top of the plane will again come to rest at the bottom if the coefficient of friction between the block and the lower half of the plane is given by |
| A. | μ = 2 tanθ |
| B. | μ = tanθ |
| C. | μ = 2 /(tanθ) |
| D. | μ = 1/ tanθ |
| Answer» B. μ = tanθ | |
| 106. |
A thin symmetrical double convex lens of refractive index μ2 = 1.5 is placed between a medium of refractive index μ1 = 1.4 to the left and another medium of refractive index μ3 = 1.6 to the right. Then, the system behaves as |
| A. | a convex lens |
| B. | a concave lens |
| C. | a glass plate |
| D. | a convexo concave lens |
| Answer» D. a convexo concave lens | |
| 107. |
The planets with radii R1 and R2 have densities ρ1, ρ2 Their atmospheric pressures are p1 and p2 respectively. Therefore, the ratio of masses of their atmosphere, neglecting variation of g within the limits of atmosphere is |
| A. | ρ1R2p1/ ρ2R1p2 |
| B. | p1R2ρ2/pP2R1ρ1 |
| C. | p1R1ρ1/p2R2ρ2 |
| D. | p1R1ρ2/p2R2ρ1 |
| Answer» E. | |
| 108. |
A skier starts from rest at point A and slides down the hill without turning or breaking. The friction coefficient is μ. When he stops at point B, his horizontal displacement is S. What is the height difference between points A and B? (The velocity of the skier is small so that the additional pressure on the snow due to the curvature can be neglected. Neglect also the friction of air and the dependence of μ on the velocity of the skier.) |
| A. | h = μS |
| B. | h = μ/S |
| C. | h = 2μS |
| D. | h = μS2 |
| Answer» B. h = μ/S | |
| 109. |
A stream of a liquid of density ρ flowing horizontally with speed v rushes out of a tube of radius r and hits a vertical wall nearly normally. Assuming that the liquid does not rebound from the wall, the force exerted on the wall by the impact of the liquid is given by |
| A. | πrρv |
| B. | πrρv2 |
| C. | πr2ρv |
| D. | πr2ρv2 |
| Answer» E. | |
| 110. |
A long straight wire is carrying current I in +z direction. The x – y plane contains a closed circular loop carrying current I2 and not encircling the straight wire. The force on the loop will be |
| A. | μ0l1l0/2π |
| B. | μ0l1l0/4π |
| C. | zero |
| D. | depends on the distance of the centre of the loop from the wire |
| Answer» E. | |
| 111. |
A particle of mass m is executing oscillation about the origin on X-axis. Its potential energy is V(x) = K|x|3. Where K is a positive constant. If the amplitude of oscillation is a, then its time period T is proportional to |
| A. | 1/√a |
| B. | a |
| C. | √a |
| D. | a3/2 |
| Answer» B. a | |
| 112. |
A rocket is intended to leave the Earth’s gravitational field. The fuel in tis main engine is a little less than the amount that is necessary and an auxiliary engine, (only capable of operating for a short time) has to be used as well. When is it best to switch on the auxiliary engine? |
| A. | at take-off |
| B. | when the rocket has nearly stopped with respect to the Earth. |
| C. | It doesn’t matter. |
| D. | Can’t say |
| Answer» B. when the rocket has nearly stopped with respect to the Earth. | |
| 113. |
Two 20 g flatworms climb over a very thin wall, 10 cm high. One of the worm is 20 cm long, the other is wider and only 10 cm long. Which of the following statement is correct regarding them? |
| A. | 20 cm worm has done more work against gravity |
| B. | 10 cm worm has done more work against gravity |
| C. | Both worms have done equal work against gravity |
| D. | Ratio of work done by both the worms is 4 : 5 |
| Answer» C. Both worms have done equal work against gravity | |