KVPY Stream-SA (Class 11) Physics: Questions 170 - 173 of 252

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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 ImaxIminImax+Imin is –

Choices

Choice (4) Response

a.

5

b.

52

c.

53

d.

35

Question number: 173

» Physics and Measurement » Errors in Measurement

MCQ▾

Question

In an experiment, mass of an object is measured by applying a known force on it, and then measuring its acceleration. If, in the experiment, the measured values of applied force and the measured acceleration are F=15.0±0.45N and a=5.00±0.05ms2 , respectively, the mass of the object is –

Choices

Choice (4) Response

a.

3.0±0.5kg

b.

125.0kg

c.

3.0±0.45kg

d.

3.0±0.12kg

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