Two monochromatic radiations X and Y are incident normally on a diffraction grating.The second order intensity maximum for X coincides with the third order intensity maximum for Y what is the ratio wavelength of X/wavelength of Y?
A bomb of mass 12 kg initially at rest explodes into two pieces of masses 4 kg and 8 kg.The speed of the 8 kg mass is 6 ms-1,The K.E of the 4 kg mass is
In a experiment to determine acceleration due to gravity by simple pendulum a student commits 1 % positive error in the measurement of length and 3 % negative error in the measurement of time period The percentage error in the values of g will be
The emf of a cell of negligible internal resistance is 2V. It is connected to the series
combination of 𝟐𝛀, 𝟑𝛀 𝐚𝐧𝐝 𝟓𝛀 resistance. The potential difference across 𝟑𝛀 resistance will be
in volt:
The length breadth and thickness of a block are given by 1= 12 cm b= 6 cm and t= 2.45 cm.the volume of the block according to the idea of significant figures should be:
A boat which has a speed of 5 km/h in still water crosses a river of width 1 km along the shortest path in 15 minutes.The velocity of the river in km/s is:
The beaker contains slurry of ice and water, the three thermometers Fahrenheit, Kelvin and centigrade placed init. the thermometers are represented as A, B and C respectively, On which thermometer the lowest reading will be?
Surface and ground water sources are contaminated by various human activities. Which of the following is not a human activity that cause contamination of fresh water?
Lipids are naturally occurring compounds produced in cell and are water insoluble but soluble in organic solvent one of the following is not a lipid, Select among the following:
Thick-walled dormant bodies formed during differentiation of vegetative cells that resist desiccation and can germinate under suitable conditions are called
The recent drop in the prime interest rate probably results from the Federal Reserve Banks tight money policy and its effect on lending institutions rather than to the drop in the overall rate of inflation
In place of the more general debate about abstract principles of government that most delegates probably expected the Constitutional Convention put ______ proposals on the table
Although the manager agreed to more flexible work schedule he said that it must be posted on the bulletin board so that both management and labour will know that everyone is assigned to do
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
