NEET 2013 | Atoms and Nuclei Question 48 | Physics

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NEET 2013

MCQ (Single Correct Answer)

-1

Ratio of longest wave lengths corresponding to Lyman and Balmer series in hydrogen spectrum is

$${7 \over {29}}$$

$${9 \over {31}}$$

$${5 \over {27}}$$

$${3 \over {23}}$$

NEET 2013

MCQ (Single Correct Answer)

-1

Out of Syllabus

The half life of a radioactive isotope 'X' is 20 years. It decays to another element 'Y' which is stable. The two elements 'X' and 'Y' were found to be in the ratio 1 : 7 in a sample of a given rock. The age of the rock is estimated to be

80 years

100 years

40 years

60 years

NEET 2013

MCQ (Single Correct Answer)

-1

A certain mass of Hydrogen is changed to Helium by the process of fusion. The mass defect in fusion reaction is 0.02866 u. The energy liberated per u is (given 1 u = 931 MeV)

6.675 MeV

13.35 MeV

2.67 MeV

26.7 MeV

AIPMT 2012 Mains

MCQ (Single Correct Answer)

-1

The transition from the state n = 3 to n = 1 in a hydrogen like atom results in ultraviolet radiation. Infrared radiation will be obtained in the transition from

2 $$ \to $$ 1

3 $$ \to $$ 2

4 $$ \to $$ 2

4 $$ \to $$ 3

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Human Health and Diseases Body Fluids and Its Circulation Locomotion and Movement Neural Control and Coordination Reproduction in Organisms Reproductive Health Structural Organisation in Animals Digestion and Absorption Excretory Products and Their Elimination Chemical Coordination and Integration Human Reproduction Animal Kingdom Breathing and Exchange of Gases Evolution