Physics Test 134

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Physics Test 134

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Weekly Quiz Competition

Question 1
4 / -1

Binding energy per nucleon vs. mass number curve for nuclei is shown in the figure W,X,Y and Z are four nuclei indicated on the curve. The process that would release energy is

A
Y→ 2 Z

B
W → X Z

C
W → 2Y

D
X → Y Z
Question 2
4 / -1

The transition from the state n = 4 to n =3 in a hydrogen-like atom results in ultraviolet radiation. Infrared radiation will be obtained in the transition

A
2 → 1

B
3 → 2

C
4 → 1

D
5 → 4
Question 3
4 / -1

A Hydrogen atom and a Li ⁺⁺ ion are in the second excited state. If l_H and l _Li are their respectively electronic angular momenta, and E_H and E _Li their respectively enrgies, then

A
I_H > I _Li and |E_H| > |E_Li|

B
I_H = I _Li and |E_H| < |E_Li|

C
I_H = I _Li and |E_H| > |E_Li|

D
I_H < I _Li and |E_H| < |E_Li|
Question 4
4 / -1

In a photoelectric experiment anode potenial is plotted against plate current

A
A and B will have different intensities while B and C will have different frequencies

B
B and C will have different intensities while A and C will have different frequencies

C
A and B will have different intensities while A and C will have equal frequencies

D
A and B will have equal intensities while B and C will have different frequencies
Question 5
4 / -1

If a star can convert all the He nuclei completely into oxygen nuclei. The energy released per oxygen nuclei is [Mass of He nucleus is 4.0026 amu and mass of Oxygen nucleus is 15.9994]

A
7.6 MeV

B
56.12 MeV

C
10.24 MeV

D
23.9 MeV
Question 6
4 / -1

The largest wavelength in the ultraviolet region of the hydrogen spectrum is 122 nm. The smallest wavelength in the infrared region of the hydrogen spectrum (to the nearrest integer) is

A
802 nm

B
823 nm

C
1882 nm

D
1648 nm
Question 7
4 / -1

Directions For Questions

Direction : Read the following question and choose

A. If both assertion and reason are true and reason is the correct explantion of assertion

B. If both assertion and reason are true but reason is not the correct explanation of assertion

C. If assertion is true but reason is false

D. If assertion is false but reason is true

...view full instructions

Assertion : Nuclear density is almost same for all nuclei

Reason: Size of nucleus ∞ A^1/3

A
A

B
B

C
C

D
D
Question 8
4 / -1

Directions For Questions

Direction : Read the following question and choose

A. If both assertion and reason are true and reason is the correct explantion of assertion

B. If both assertion and reason are true but reason is not the correct explanation of assertion

C. If assertion is true but reason is false

D. If assertion is false but reason is true

...view full instructions

Assertion: A free neutron is not a stable particle

Reason: It decays spontaneously into a proton, an electron and an antineutrino

A
A

B
B

C
C

D
D
Question 9
4 / -1

Directions For Questions

Direction : Read the following question and choose

A. If both assertion and reason are true and reason is the correct explantion of assertion

B. If both assertion and reason are true but reason is not the correct explanation of assertion

C. If assertion is true but reason is false

D. If assertion is false but reason is true

...view full instructions

Assertion: In outermost stationary orbit, energy of electron is least negative

Reason: In such an orbit, electron is at maximum distance from the nucleus

A
A

B
B

C
C

D
D
Question 10
4 / -1

Directions For Questions

Direction : Read the following question and choose

A. If both assertion and reason are true and reason is the correct explantion of assertion

B. If both assertion and reason are true but reason is not the correct explanation of assertion

C. If assertion is true but reason is false

D. If assertion is false but reason is true

...view full instructions

Assertion: On alpha-decay, group of daughter nucleus shifts two places to the left from the group of parent nucleus

Reason : An alpha particle carries four units of mass

A
A

B
B

C
C

D
D

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Physics Test 134

Result

Physics Test 134

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Rank

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SHARING IS CARING

Question 1

Y→ 2 Z

W → X Z

W → 2Y

X → Y Z

Question 2

2 → 1

3 → 2

4 → 1

5 → 4

Question 3

IH > I Li and |EH| > |ELi|

IH = I Li and |EH| < |ELi|

IH = I Li and |EH| > |ELi|

IH < I Li and |EH| < |ELi|

Question 4

A and B will have different intensities while B and C will have different frequencies

B and C will have different intensities while A and C will have different frequencies

A and B will have different intensities while A and C will have equal frequencies

A and B will have equal intensities while B and C will have different frequencies

Question 5

7.6 MeV

56.12 MeV

10.24 MeV

23.9 MeV

Question 6

802 nm

823 nm

1882 nm

1648 nm

Question 7

A

B

C

D

Question 8

A

B

C

D

Question 9

A

B

C

D

Question 10

A

B

C

D

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I_H > I _Li and |E_H| > |E_Li|

I_H = I _Li and |E_H| < |E_Li|

I_H = I _Li and |E_H| > |E_Li|

I_H < I _Li and |E_H| < |E_Li|