BITSAT (Birla Institute of Technology & Science Admission Test) Physics: Questions 134 - 140 of 382

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Question 134

Question

MCQ▾

The displacement of a particle moving along a straight line at time is given by

The acceleration of the particle is –

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Choice (4)Response

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b.

c.

d.

Question 135

Question

MCQ▾

A luminous efficiency of a lamp is and its luminous intensity is . The power of lamp is

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Choice (4)Response

a.

b.

c.

d.

Question 136

Question

MCQ▾

An iron rod of length and cross-sectional area of stretched by , when a mass of is hung from its lower end. Young՚s modulus of iron rod is –

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Choice (4)Response

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b.

c.

d.

Question 137

Question

MCQ▾

The earth of mass revolves around the sun with an angular velocity of . In a circular orbit radius . The force exerted by the sun, on the earth is

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Choice (4)Response

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b.

c.

d.

Question 138

Question

MCQ▾

For driving current of for minute in a circle of work is to be done. The emf of the source in the circuit is

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Choice (4)Response

a.

b.

c.

d.

Question 139

Question

MCQ▾

Kinetic energy of an electron accelerated in a potential difference of is

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Choice (4)Response

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b.

c.

d.

Question 140

Question

MCQ▾

A wire has resistance of at and resistance at . The temperature coefficient of resistance of the wire is –

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Choice (4)Response

a.

b.

c.

d.

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