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

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Question number: 169

» Kinematics » Relative Velocity

MCQ▾

Question

A boat crossing a river moves with a velocity v relative to still water. The river is flowing with a velocity Equation 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

» Kinematics » Frame of Reference

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

» Laws of Motion » Static and Kinetic Friction

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

» Wave Optics » Interference

MCQ▾

Question

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

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

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