Kinematics-Average Speed and Instantaneous Velocity [NEET (2024 Updated)-National Eligibility cum Entrance Test (Medical) Physics]: Questions 95 - 98 of 143

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Question 95

Question MCQ▾

A bullet of mass 0.01 kg travelling at a speed of 300 m/s strikes a block of mass 2 kg, which is suspended by a string of length 5 m. The center of gravity of the block is found to rise a vertical distance of 0.1 m The speed of the bullet after it emerges from the block will be -

Choices

Choice (4)Response

a.

110 m/s

b.

1.4 m/s

c.

20 m/s

d.

220 m/s

Edit

Question 96

Question MCQ▾

A bullet of mass 20 g hits a block of mass 1.98 kg suspended from a massless string of length 100 cm and sticks to it. The bullet flies down at an angle of 30° to the horizontal with a velocity of 200 m/s. Through what height the block will rise-

Choices

Choice (4)Response

a.

0.45 m

b.

0.30 m

c.

0.75 m

d.

0.15 m

Edit

Question 97

Question MCQ▾

The rate of burning of fuel in a rocket is 60 . and comes out with and velocity . The force exerted by gas on rocket will be –

Choices

Choice (4)Response

a.

b.

300 N

c.

d.

200 N

Edit

Question 98

Question MCQ▾

A 30 g bullet pierces through a plate of mass m1 = 1 kg and then comes to rest inside a second plate of mass m2 = 1.5 kg. It is found that the two plates, initially at rest, now move with equal velocities. The percentage loss in the initial velocity of bullet when it is between m1 and m2. (Neglect any loss of material of the bodies, due to action of bullet.) will be -

Choices

Choice (4)Response

a.

20.68%

b.

46.45%

c.

39.525%

d.

25.67%

Edit