NEET Physics: Questions 1134 - 1137 of 2098

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Question number: 1134

» Properties of Solids & Liquids » Surface Energy and Surface Tension

MCQ▾

Question

Two soap bubbles of radii r 1 and r 2 equal to 4 cm and 5 cm are touching each other over a common surface S 1 S 2. Its radius will be

Choices

Choice (4) Response

a.

4.5 cm

b.

20 cm

c.

5 cm

d.

4 cm

Question number: 1135

» Properties of Solids & Liquids » Viscosity

MCQ▾

Question

The liquid meniscus in capillary tube will be convex, if the angle of contact is

Choices

Choice (4) Response

a.

Greater than 90°

b.

Equal to 90°

c.

Less than 90°

d.

Equal to 0°

Question number: 1136

» Wave Optics » Young's Double Slit Experiment

MCQ▾

Question

In Young’s double slit experiment the two slits are illuminated by light of wavelength 5890 Å and the angular separation between the fringes obtained on the screen is 0.2°. If the whole apparatus is immersed in water then the angular fringe width will be, if the refractive index of water is 4/3?

Choices

Choice (4) Response

a.

0.15°

b.

15°

c.

30°

d.

0.30°

Question number: 1137

» Atoms and Nuclei » Energy Levels

MCQ▾

Question

In figure the energy level diagram of an atom with one electron knocked out is shown. Which of the following relation is true?

( νkβ is frequency of K β X-ray of a material, νkα is frequency of K α X-ray of same material and νLα is the frequency of L α X-ray of same material)

Finding the correct relationship of the energy level diagram

Finding the Correct Relationship of the Energy Level Diagram

Energy level diagram of an atom with one electron knocked out is shown

Choices

Choice (4) Response

a.

νkβ=(νkα+νLα)2

b.

νkβ=νkα+νLα

c.

νkβ=νkα2+νLα2

d.

νkβ=νkα2+νLα2

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