NEET Physics: Questions 806 - 810 of 2142

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Question number: 806

» Experimental Skills » Screw Gauge

MCQ▾

Question

A cricket bat is cut at the location of its center of mass as shown in the fig. Then

Cricket bat – Finding center of mass for this figure

Cricket Bat – Finding Center of Mass for This Figure

In above figure we show the cricket bat, which cut at its center of mass

Choices

Choice (4) Response

a.

Mass of handle piece is double the mass of bottom piece

b.

The handle piece will have larger mass

c.

The two pieces will have the same mass

d.

The bottom piece will have larger mass

Question number: 807

» Experimental Skills » Screw Gauge

MCQ▾

Question

Two particles of masses m l and m 2 initially at rest start moving towards each other under their mutual force m attraction. The speed of the center of mass at any time u when they are at a distance r apart, is

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

zero

d.

Equation

Question number: 808

» Laws of Motion » Force and Inertia

MCQ▾

Question

A rope of length 15 m and linear density 2 kg/m is lying length wise on a horizontal smooth table. It is pulled by a force of 25 N. The tension in the rope at the point 7 m away from the point of application, will be –

Choices

Choice (4) Response

a.

13.33 N

b.

36.67 N

c.

11.67 N

d.

All of the above

Question number: 809

» Electromagnetic Induction & Alternating Currents » Peak and RMS Value of AC

MCQ▾

Question

The resistance of a coil for dc is 5 ohm. In ac, the resistance will

Choices

Choice (4) Response

a.

Increase

b.

Decrease

c.

Be zero

d.

Remain same

Passage

Read the passage given below and answer the questions that follow:

A system consists of block A and B each of mass m connected by a light spring as shown in the figure with block B in contact with a wall. The block A compresses the spring by 3mg /k from natural length of spring and then released from rest. Neglect friction anywhere.

Block system with 2 blocks A and B

Block System With 2 Blocks a and B

In above figure we show that block A and B which connected with spring.

Question number: 810 (2 of 3 Based on Passage) Show Passage

» Experimental Skills » Screw Gauge

MCQ▾

Question

Maximum extension in the spring after system loses contact with wall

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

None of the above

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