NEET 2013 (Karnataka) | Atoms and Nuclei Question 45 | Physics

NEET 2013 (Karnataka)

MCQ (Single Correct Answer)

-1

Out of Syllabus

$$\alpha $$-particles, $$\beta $$-particles and $$\gamma $$-rays are all having same energy. Their penetrating power in a given medium in increasing order will be

$$\gamma $$, $$\alpha $$, $$\beta $$

$$\alpha $$, $$\beta $$, $$\gamma $$

$$\beta $$, $$\alpha $$, $$\gamma $$

$$\beta $$, $$\gamma $$, $$\alpha $$

NEET 2013 (Karnataka)

MCQ (Single Correct Answer)

-1

An electron in hydrogen atom makes a transition n₁ $$ \to $$ n₂ where n₁ and n₂ are principal quantum numbers of the two states . Assuming Bohr's model to be valid, the time period of the electron in the initial state is eight times that in the final state. The possible values of n₁ and n₂ are

n₁ = 6 and n₂ = 2

n₁ = 8 and n₂ = 1

n₁ = 8 and n₂ = 2

n₁ = 4 and n₂ = 2

NEET 2013 (Karnataka)

MCQ (Single Correct Answer)

-1

How does the Binding Energy per nucleon vary with the increase in the number of nucleons ?

Decrease continuously with mass number.

First decreases and then increases with increase in mass number.

First increases and then decreases with increase in mass number.

increases continuously with mass number.

NEET 2013

MCQ (Single Correct Answer)

-1

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

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

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

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

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

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