AIIMS (All India Institute of Medical Sciences) Physics: Questions 369 - 372 of 500

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Question number: 369

» Atoms and Nuclei » Half Life and Mean Life

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MCQ▾

Question

A radioactive substance decays to of its initial activity in 48 days. The half-life of the radioactive substance expressed in days is –

Choices

Choice (4)Response

a.

16

b.

30

c.

8

d.

32

Question number: 370

» Properties of Solids & Liquids » Boyle's Law & Applications

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MCQ▾

Question

A uniform cylinder of density and length L floats vertically completely immersed in two liquids with length L1 immersed in a liquid of density and remaining length L2 immersed in the other liquid of density as shown in figure. The ratio will be equal to –

A uniform cylinder immersed in two liquids

A Uniform Cylinder Immersed in Two Liquids

Choices

Choice (4)Response

a.

b.

c.

d.

Question number: 371

» Ray Optics » Resolving Power of Microscopes and Astronomical Telescopes

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Question

A telescope has an objective lens of focal length 500 cm and an eye piece with focal length 10 cm. If this telescope is used to see a 80 meter tall building at a distance of 5km, what is the height of the image of the building formed by the objective lens –

Choices

Choice (4)Response

a.

15 cm

b.

6 cm

c.

10 cm

d.

8 cm

Question number: 372

» Oscillations and Waves » Reflection of Waves

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MCQ▾

Question

A sound wave travelling with a velocity in medium A reaches a point on the interface of medium A and medium B. The velocity of wave in medium B is . What is the angle of incidence for total internal reflection?

Choices

Choice (4)Response

a.

b.

c.

d.

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