KVPY Stream-SA (Class 11) Physics: Questions 164 - 168 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: 164

» Kinematics » Relative Velocity

MCQ▾

Question

A train of length l (165 m) is going towards north directional constant speed v1=12 m/s. A parrot flies at a constant speed of v2 = 3 m/s towards south parallel to be railway track. The time taken by the parrot to cross the train is –

Choices

Choice (4) Response

a.

15 s

b.

18 s

c.

11 s

d.

9 s

Question number: 165

» Kinetic Theory of Gases » Equation of State of a Perfect Gas

MCQ▾

Question

If for a gas Equation , The atomicity of the gas is-

Choices

Choice (4) Response

a.

Triatomic

b.

Diatomic

c.

Cannot determine

d.

Monoatomic

Question number: 166

» Atoms and Nuclei » Radioactivity

MCQ▾

Question

The activity of a radioactive sample reduces to Equation of its original value in 9 hours. What will be its activity in 27 hours?

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

Question number: 167

» Kinematics » Projectile Motion

MCQ▾

Question

The maximum height attained by a projectile is increased by 15 % by increasing its speed of projection, without changing the angle of projection. The percentage increase in the horizontal range will be –

Choices

Choice (4) Response

a.

20 %

b.

10%

c.

15%

d.

5%

Question number: 168

» Work, Energy and Power » Work-Energy Theorem

MCQ▾

Question

The displacement x of a particle moving in one dimension, under the action of a constant force is related to time t by the equation: Equation

Where, x is in meter and t is sec. The work done by the force in first 4 sec is –

Choices

Choice (4) Response

a.

6 J

b.

4 J

c.

8 J

d.

0

f Page
Sign In