The value of acceleration due to gravity on the surface of the earth is g.If the diameter of the earth becomes double of its present value and its mass remains unchanged, the value of acceleration due to gravity on the surface of the earth would become
The initial velocity of a body moving along a straight line in 7 m/s.It has a uniform acceleration of 4 m/s2.The distance covered by the body in the 5th second of its motion is
A fly is sitting on the objective of a telescope pointed towards the moon.What effect is expected on the photography of the moon taken through the telescope?
A uniform beam of weight 100 N is 4 m long and is supported 1.0 m from one end. A load of weight wN hangs from that ened and the beam is in equilibrium.What is the value of w?
A particle is moving along a circular path of radius 5 m with uniform speed 5 m/sec what will be the magnitude of centripetal acceleration when the particle completes half revolution
The optical resolution of microscope or a telescope tells us how close together, the two point sources of light can be so that they are still seen as two separate sources
A two-slit arrangement is set up to produce an interference pattern on a screen. The fringes are too close together for convenient observation. How could the distance between them be increased?
A mixture of H2, H2 and CH4has total number of 0.51 mole and total pressure of 1 atmosphere. If the mass of H2is 0.8 gram, then its partial pressure is
A compound X has all of the properties below. It is a liquid at 25°C it mixes completely with water it reaets with aqueous sodium hydroxide, What could X be?
According to charles law there will be a change in the volume of a given mass of a gas by 1/273 of its original volume at 0°C if the temperature of the gas is changed by
Biosphere is spread out over the surface of planet earth extending about ______ kilometers in the upper reaches of atmosphere and also in same distance into the depths of oceans
Thick-walled dormant bodies formed during differentiation of vegetative cells that resist desiccation and can germinate under suitable conditions are called
The president of the block association tried to convince her neighbours they should join forces to prevent crime in the neighbour hood rather than continuing to be victimized
The director of the Miss America pageant continues to maintain that the judges ultimate choice is based less on the physical appearance of the contestant as on her intelligence talent and personality
Having discovered the Roman aristocrats to be suffering from lead poisoning it is now thought that this was a major cause of their inability to reproduce
A person who constantly calls attention to his trials and sufferings is in danger of developing a martyr complex and impressing others that he is ______ seeking sympathy
Primarily accomplished through the use of the electron microscope researchers have recently vastly increased their knowledge of the process of cell division
If the Titanic had hit the iceberg head on, its water. tight compartments might have saved it from ______, but it swerved to avoid the iceberg, and in the collision so many compartments were opened to the sea that disaster was _______
Traffic speed limits are set at a level that achieves some balance between the danger of _______ speed and the desire of most people to travel as quickly as possible
