BITSAT (Birla Institute of Technology & Science Admission Test) Physics: Questions 243 - 248 of 382

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Question 243

Question

MCQ▾

The speed of boat is in still water. It crosses a river of width along the shortest possible path in . Then velocity of river is –

Choices

Choice (4)Response

a.

b.

c.

d.

Question 244

Question

MCQ▾

A car accelerates from rest at constant rate for 1st and covers a distance . It covers a distance in next at the same acceleration. Which of the following is true?

Choices

Choice (4)Response

a.

b.

c.

d.

Question 245

Question

MCQ▾

The displacement of a particle moving in a straight line depends on time as: .

The ratio of its initial acceleration to its initial velocity depends –

Choices

Choice (4)Response

a.

Only on

b.

Only on

c.

Only on

d.

Only on

Question 246

Question

MCQ▾

Core of transformer is made up of –

Choices

Choice (4)Response

a.

Steel

b.

Iron

c.

Alnico

d.

Soft iron

Question 247

Question

MCQ▾

The energy stored in a capacitor is actually stored –

Choices

Choice (4)Response

a.

On the outer surface of the plates

b.

On the negative plate

c.

Between the plates

d.

On the positive plate

Question 248

Question

MCQ▾

A sample of a radioactive substance contains atoms. If its half-life is , how many atoms will be left intact in the sample after one day?

Choices

Choice (4)Response

a.

707

b.

2000

c.

1000

d.

1414

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