SureDen
PRE Board E
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A man weighs 80Kg He stands on a weighing scale in a lift which is moving upwards with a uniform acceleration of 5m/s2 What would be the reading on the scale. Take g=10 m/s2 &nb
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From the graph between current i & voltage V shown, identity the portion corresponding to negative resistance[CBSE PMT 1997]
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What will be the equivalent resistance of circuit shown in figure between points A and D [CBSE PMT 1996]
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A half ring of radius R has a charge of λ per unit length. The electric field at the centre is
[CPMT 2000; CBSE PMT 2000; REE 1999]
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Given below is an incomplete table about certain hormones, their source glands and one major effect of each on the body of humans. Identify the correct option for the blanks A, B and C : (CBSE 2011)
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In vibration magnetometer the time period of suspended bar magnet can be reduced by &
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A thermodynamic process is shown in the figure. The pressures and volumes corresponding to some points in the figure are: PA=3 x 104Pa, PB=8 x104 Pa and VA= 2 x 10-3m3, VD=5 x 10-3m3
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The temperature of a gas is raised while its volume remains constant, the pressure exerted by a gas on the walls of the container increases because its molecules &
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22 gm of CO2 at 27°C is mixed with 16 gm of O2 at 37°C. The temperature of the mixture is [CBSE PMT 1995]
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Two identical glass bulbs are interconnected by a thin glass tube. A gas is filled in these bulbs at N.T.P. If one bulb is placed in ice and another bulb is placed in hot bath, then the pressure of the gas becomes 1.5 times. The temperature of hot bath will be
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A neutron having mass of 1.67 x 10-27 kg and moving at 108m/s collides with a deutron at rest and sticks to it. If the mass of the deutron is 3.34 x 10-27 kg; the speed of the combination is &nb
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A rubber ball is dropped from a height of 5m on a planet where the acceleration due to gravity is not known. On bouncing, it rises to 1.8 m. The ball loses its velocity on bouncing by a factor of &n
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