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What was the primary reason behind the rapid industrialization of South Korea in the late 20th century?

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Important Questions on Dual Nature of Radiation and Matter

MEDIUM

Physics>Modern Physics>Dual Nature of Radiation and Matter>Wave Nature of Matter

The energy associated with electric field is

(U_{E})

and with magnetic field is

(U_{B})

for an electromagnetic wave in free space. Then:

HARD

Physics>Modern Physics>Dual Nature of Radiation and Matter>Wave Nature of Matter

Select two disease resistant crop varieties from the list of crop varieties given below:

EASY

Physics>Modern Physics>Dual Nature of Radiation and Matter>Wave Nature of Matter

In an electron microscope, the resolution that can be achieved is of the order of the wavelength of electrons used. To resolve a width of

7.5 \times 10^{- 12} m,

the minimum electron energy required is close to:

MEDIUM

Physics>Modern Physics>Dual Nature of Radiation and Matter>Wave Nature of Matter

A proton, a neutron, an electron and an

α

-particle have same energy. Then their de Broglie wavelengths compare as

EASY

Physics>Modern Physics>Dual Nature of Radiation and Matter>Wave Nature of Matter

Which of the following is true for Golden rice?

EASY

Physics>Modern Physics>Dual Nature of Radiation and Matter>Wave Nature of Matter

An electron is accelerated through a potential difference of

10,000 V .

Its de Broglie wavelength is (nearly):

(m_{e} = 9 \times 1 0^{- 31} k g)

EASY

Physics>Modern Physics>Dual Nature of Radiation and Matter>Wave Nature of Matter

Nematode specific genes were introduced into the tobacco host plant using a vector

HARD

Physics>Modern Physics>Dual Nature of Radiation and Matter>Wave Nature of Matter

Plot a graph showing variation of de Broglie wavelength

(λ)

associated with a charged particle of mass

m

, versus

\frac{1}{\sqrt{V}}

, where

V

is the potential difference through which the particle is accelerated. How does this graph gives us the information regarding the magnitude of the charge of the particle?

EASY

Physics>Modern Physics>Dual Nature of Radiation and Matter>Wave Nature of Matter

What triggers activation of protoxin to active Bt toxin of Bacillus thuringiensis in a boll worm?

HARD

Physics>Modern Physics>Dual Nature of Radiation and Matter>Wave Nature of Matter

A corn farmer has perennial problem of corn-borer infestation in his crop. Being environmentally conscious he does not want to spray insecticides. Suggest solution based on your knowledge of biotechnology. Write the steps carried out to achieve it.

MEDIUM

Physics>Modern Physics>Dual Nature of Radiation and Matter>Wave Nature of Matter

What is the de Broglie wavelength of a ball of mass $0.060 Kg$ moving at a speed of $1.0 m / s$ ?

EASY

Physics>Modern Physics>Dual Nature of Radiation and Matter>Wave Nature of Matter

A segment of DNA molecule comprises of 546 nucleotides. How many cytosine nucleotides would be present in it if the number of adenine nucleotides is 96 ?

EASY

Physics>Modern Physics>Dual Nature of Radiation and Matter>Wave Nature of Matter

Write down de Broglie's relation and explain the terms therein.

EASY

Physics>Modern Physics>Dual Nature of Radiation and Matter>Wave Nature of Matter

The de-Broglie wavelength of a neutron in thermal equilibrium with heavy water at a temperature

T

(Kelvin) and mass

m

is:

MEDIUM

Physics>Modern Physics>Dual Nature of Radiation and Matter>Wave Nature of Matter

A proton and an electron have equal speeds. Find the ratio of de Broglie wavelengths associated with them.

MEDIUM

Physics>Modern Physics>Dual Nature of Radiation and Matter>Wave Nature of Matter

A plane electromagnetic wave of frequency

50 M H z

travels in free space along the positive

x

- direction. At a particular point in space and time,

\vec{E} = 6.3 \hat{j} V / m,

The corresponding magnetic field

\vec{B}

, at that point will be:

MEDIUM

Physics>Modern Physics>Dual Nature of Radiation and Matter>Wave Nature of Matter

What is the de Broglie wavelength of a bullet of mass $0.040 Kg$ travelling at the speed of $1.0 Km / s$ ?

EASY

Physics>Modern Physics>Dual Nature of Radiation and Matter>Wave Nature of Matter

How has the use of Agrobacterium as vectors helped in controlling Meloidogyne incognita infestation in tobacco plants? Explain in the correct sequence.

EASY

Physics>Modern Physics>Dual Nature of Radiation and Matter>Wave Nature of Matter

Which part of the tobacco plant is infected by Meloidogyne incognita?

EASY

Physics>Modern Physics>Dual Nature of Radiation and Matter>Wave Nature of Matter

Which one of the following represents a palindromic sequence in DNA?

What was the primary reason behind the rapid industrialization of South Korea in the late 20th century?

Important Questions on Dual Nature of Radiation and Matter

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