NEET Physics: Questions 1401 - 1404 of 2099

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Question number: 1401

» Properties of Solids & Liquids » Young's Modulus

MCQ▾

Question

A stress of l kg/mm 2 is applied on a wire. If the modulus of elasticity of the wire is 10 10 dyne/cm 2, then the percentage increase in the length of the wire will be

Choices

Choice (4) Response
a.

98

b.

9.8

c.

0.0098

d.

0.007

Question number: 1402

» Atoms and Nuclei » Hydrogen Spectrum

MCQ▾

Question

he energy levels of the hydrogen spectrum are shown in figure. There are some transitions. A, B, C, D and E. Transition A, B and C respectively represent

Hydrogen Spectrum and energy levels depicted

Hydrogen Spectrum and Energy Levels Depicted

The energy levels of the hydrogen spectrum are shown in figure.

Choices

Choice (4) Response
a.

Series limit of Lyman series, third spectral line of Balmer series and second spectral line of Paschen series

b.

Ionization potential of hydrogen, second spectral line of Balmer series and third spectral line of Paschen series

c.

Series limit of Lyman series, second spectral line of Balmer series and third spectral line of Paschen series

d.

First spectral line of Lyman series, third spectral line of Balmer series and the second spectral line of Paschen series.

Question number: 1403

» Properties of Solids & Liquids » Elastic Behavior

MCQ▾

Question

A spring is stretched by 6 cm when a load of 5.4 × 10 6 dyne is suspended from it. Work done will be

Choices

Choice (4) Response
a.

16.2 × 10 6 erg

b.

8 × 10 6 J

c.

8.1 × 10 6 erg

d.

8.1 × 10 6 J

Passage

Read the passage given below and answer the questions that follow:

There is a small mercury drop of radius 5.0 mm. A surface P of area 2.0 mm 2 is placed at the top of the drop. Atmospheric pressure = 10 5 Pa. Surface tension of mercury = 0.465 N/m. Gravity effect is negligible.

Question number: 1404 (1 of 2 Based on Passage) Show Passage

» Properties of Solids & Liquids » Application of Surface Tension

MCQ▾

Question

The force exerted by mercury drop on the surface P is

Choices

Choice (4) Response
a.

0.3 N

b.

1.3456 N

c.

0.10086 N

d.

0.10023 N

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