# KVPY Stream-SA (Class 11) Physics: Questions 169 - 172 of 252

Get 1 year subscription: Access detailed explanations (illustrated with images and videos) to 252 questions. Access all new questions we will add tracking exam-pattern and syllabus changes. View Sample Explanation or View Features.

Rs. 200.00 or

## Question number: 169

MCQ▾

### Question

A boat crossing a river moves with a velocity v relative to still water. The river is flowing with a velocity with respect to the bank. The angle with respect to the flow direction with which the boat should move to minimize the drift is–

### Choices

Choice (4) Response

a.

1350

b.

600

c.

300

d.

1200

## Question number: 170

MCQ▾

### Question

A train Y of 400 meter length travelling at 75 km/hr overtakes another train X of 200 meter length travelling at 50 km/hr velocity in the same direction. The time train Y takes to completely pass train X –

### Choices

Choice (4) Response

a.

76.32 sec

b.

22.5 sec

c.

86.4 sec

d.

108.3 sec

## Question number: 171

MCQ▾

### Question

Mark the correct statements:

Select the correct option:

(1) Coefficient of static friction is always greater than that of kinetic friction.

(2) Limiting friction is always greater than the kinetic friction.

(3) Limiting friction can never be less than static friction.

(4) Static friction is always greater than the kinetic friction.

### Choices

Choice (4) Response

a.

(1), (2) and (3) are correct

b.

(1) and (3) are correct

c.

(2) and (4) are correct

d.

(2) and (3) are correct

## Question number: 172

MCQ▾

### Question

The intensity ratio of two interfering beams of light is 5. The value of is –

### Choices

Choice (4) Response

a.

b.

c.

d.

f Page