#### The following diagram indicates the energy levels of a certain atom when the system moves from level to , emitting a photon of wavelength . The wavelength of photon produced during its transition from level to is

#### Answer:The correct answer is:

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#### Let the eleven letters .....,K denote an arbitrary permutation of the integers (1, 2,.....11), then

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#### pitch of screw gauge is 1 mm and there are 100 divisions on the circular scak. What measurin the diametcr of a wire, the linear scale reads, 1 mm and 47^{t} division on the circular scale coincide with the reference line. The lengthof the wire 155.6 cm. What will be the curved surface area (in cm^{2} of the wire in appropriate number of significant figures.

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#### complete the following sentence.Time period of oscillating of a simple pendulum is dependent on...

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#### When a sample of solid lithium is placed in a flask of hydrogen gas then following reaction happened This statement is

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#### Complete the following sentence In a damped oscillation of a pendulum ..

The nucleus after two successive decays will give

The nucleus after two successive decays will give

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#### The screw gauges shown above has a zero error of -0.02 and 100 divisions on the circular scak What is the diameter of wire?

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#### Four lowest energy levels of -atom are shown in the figure. The number of possible emission lines would be

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.

#### The number of ways of dividing 52 cards amongst four players equally, are

.

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#### If the time period of undamped oscillation is T and that of damped oscillatin is , then T,what is the relation between I&.

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In the given nuclear reaction represents

In the given nuclear reaction represents

A hypothetical radioactive nucleus decays according to the following series If the mass number and atomic number of *A* are respectively 180 and72. Then to atomic number and mass number of *A *will respectively be

A hypothetical radioactive nucleus decays according to the following series If the mass number and atomic number of *A* are respectively 180 and72. Then to atomic number and mass number of *A *will respectively be

In the given reaction radioactive radiation are emitted in the sequence

In the given reaction radioactive radiation are emitted in the sequence