BITSAT Physics: Questions 35 - 41 of 313

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Question number: 35

» Magnetic Effects of Current and Magnetism » Para, Dia and Ferro-Magnetic Substances

MCQ▾

Question

If magnetic material, which moves from stronger to weaker parts of magnetic field, then it is known as –

Choices

Choice (4) Response

a.

Diamagnetic

b.

Paramagnetic

c.

Ferromagnetic

d.

Anti – ferromagnetic

Question number: 36

» Electromagnetic Induction & Alternating Currents » Induced EMF and Current

MCQ▾

Question

The phenomenon of production of emf in a current carrying metallic strip on applying a magnetic field along a direction perpendicular to the direction of flow of current is known as –

Choices

Choice (4) Response

a.

Hall effect

b.

Joule effect

c.

Seeback effect

d.

Peltier effect

Question number: 37

» Oscillations and Waves » Simple Pendulum

MCQ▾

Question

The time period of a simple pendulum in a satellite is –

Choices

Choice (4) Response

a.

Same as an earth

b.

Unity

c.

Infinity

d.

Zero

Question number: 38

» Atoms and Nuclei » Half Life and Mean Life

MCQ▾

Question

What percent of original radioactive atoms is left after five half – lives?

Choices

Choice (4) Response

a.

3%

b.

10%

c.

5%

d.

20%

Question number: 39

» Thermodynamics » Laws of Thermodynamics » First Law of Thermodynamics

MCQ▾

Question

The evaporation of a liquid from its surface is based on –

Choices

Choice (4) Response

a.

Bernoulli’s law

b.

Joule’s law

c.

Thomson’s law

d.

Stefan’s law

Question number: 40

» Atoms and Nuclei » Composition and Size of Nucleus

MCQ▾

Question

92U235 and 92U238 differ as –

Choices

Choice (4) Response

a.

92U235 has 2 protons less

b.

92U238 has 3 neutrons more

c.

92U235 has 3 protons less

d.

All of the above

Question number: 41

» Gravitation » Gravitational Potential

MCQ▾

Question

If the gravitational force had varied as r52 instead of r2 . The potential energy of a particle at a distance r from the centre of the earth would be proportional to

Choices

Choice (4) Response

a.

r32

b.

r1

c.

(r1r2)32

d.

r2

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