AIIMS Physics: Questions 376 - 380 of 500

Get 1 year subscription: Access detailed explanations (illustrated with images and videos) to 500 questions. Access all new questions we will add tracking exam-pattern and syllabus changes. View Sample Explanation or View Features.

Rs. 350.00 or

Question number: 376

» Work, Energy and Power » Kinetic Energy

MCQ▾

Question

A body of mass 10 kg has momentum of 15kgms . When a force of 0.4 N is applied on it for 15 seconds, what is the change in its kinetic energy –

Choices

Choice (4) Response
a.

10.8 J

b.

5.0 J

c.

8.2 J

d.

15.2 J

Question number: 377

» Electromagnetic Induction & Alternating Currents » Self and Mutual Inductance

MCQ▾

Question

The of mutual inductance of two coils when magnetic flux changes by 6×102Wb and current changes by 0.02 A is –

Choices

Choice (4) Response
a.

6 H

b.

12 H

c.

9 H

d.

3 H

Question number: 378

» Dual Nature of Matter and Radiation » Black-Body Radiation

MCQ▾

Question

A black body, at a temperature of 240°C, radiates heat at a rate of 30calm2s1 . When its temperature is raised to 750°C, the heat radiated by it in calm2s1 will be closest to –

Choices

Choice (4) Response
a.

380

b.

260

c.

480

d.

140

Question number: 379

» Rotational Motion » Torque

MCQ▾

Question

A force F=(3i^+5j^) newton acts on a particle whose position vector with respect to origin O is r=(2i^7j^)metre. Find the magnitude and direction of the torque.

Choices

Choice (4) Response
a.

Magnitude 21 Nm, direction along the negative z – axis

b.

Magnitude 31 Nm, direction along the positive z – axis

c.

Magnitude 21 Nm, direction along the positive z – axis

d.

Magnitude 31 Nm, direction along the negative z – axis

Question number: 380

» Kinematics » Motion in a Plane

MCQ▾

Question

Fine the distance covered by a particle in 7 sec whose acceleration is (2t1)ms2 . Assume that at t=0,v=0 .

Choices

Choice (4) Response
a.

89.8 m

b.

103.4 m

c.

72.5 m

d.

60.2 m

Sign In