Properties of Solids & Liquids-Latent Heat (NEET Physics): Questions 1 - 4 of 7

Get 1 year subscription: Access detailed explanations (illustrated with images and videos) to 2098 questions. Access all new questions we will add tracking exam-pattern and syllabus changes. View Sample Explanation or View Features.

Rs. 550.00 or

Question number: 1

» Properties of Solids & Liquids » Latent Heat

MCQ▾

Question

A lead bullet at 27° C just n tits when, stopped by an obstacle. Assuming that 25 % of heat is absorbed by the obstacle, then the velocity of the bullet at the time of striking (M. P. of lead = 327°C, specific heat of lead = 0.03 cal/gm °C, latent heat of fusion of lead = 6 cal/gm and J = 4.2 joule/cal)

Choices

Choice (4) Response

a.

307.5 m/sec

b.

1230 m/sec

c.

410 m/sec

d.

Question does not provide sufficient data or is vague

Question number: 2

» Properties of Solids & Liquids » Latent Heat

MCQ▾

Question

A lead bullet at 25°C just n tits when stopped by an obstacle. Assuming that 25 % of heat is absorbed by the obstacle, then the velocity of the bullet at the time of striking (M. P. of lead = 320°C, specific heat of lead = 0.02 cal/gm°C, latent heat of fusion of lead = 6 cal/gm and J = 4.2 joule/cal)

Choices

Choice (4) Response

a.

4.010 m/sec

b.

0.365 m/sec

c.

307.5 m/sec

d.

None of the above

Question number: 3

» Properties of Solids & Liquids » Latent Heat

Assertion-Reason▾

Assertion (Ꭺ)

Latent heat of fusion of ice is 336000 J kg -1

Reason (Ꭱ)

Latent heat refers to change of state without any change in temperature.

Choices

Choice (4) Response

a.

Both Ꭺ and Ꭱ are false

b.

Both Ꭺ and Ꭱ are true but Ꭱ is NOT the correct explanation of Ꭺ

c.

Ꭺ is false but Ꭱ is true

d.

Ꭺ is true but Ꭱ is false

Question number: 4

» Properties of Solids & Liquids » Latent Heat

MCQ▾

Question

A bullet moving with a uniform velocity v, stops sudden after hitting the target and the whole mass melts be m, specific heat S, initial temperature 28°C, melting point 375 °C and the latent heat L. Then v is given by

Choices

Choice (4) Response

a.

mL=mS(37535)+12mv2J

b.

mS(57525)+mL=12mv2J

c.

mS(37528)mL=12mv2J

d.

mS(47525)+mL=12mv2J

Sign In