# NEET (NTA)-National Eligibility cum Entrance Test (Medical) Physics: Questions 1272 - 1275 of 2184

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## Question number: 1272

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MCQ▾

### Question

3 kg of ice at - 20°C is mixed with 10 kg of water at 20°C in an insulating vessel having a negligible heat capacity. Calculate the final mass of water remaining in the container. It is given that the specific heats of water and ice are 1 kcal/kg /°C and 0.5 kcal/kg/°C while the latent heat of fusion of ice is 80 kcal/kg

### Choices

Choice (4) Response

a.

12.125 kg

b.

47.5 kg

c.

6.435 kg

d.

15 kg

## Question number: 1273

» Properties of Solids & Liquids » Heat Transfer » Convection

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MCQ▾

### Question

For cooking the food, which of the following type of utensil is most suitable

### Choices

Choice (4) Response

a.

Low specific heat and high conductivity

b.

High specific heat and low conductivity

c.

Low specific heat and low conductivity

d.

High specific heat and high conductivity

## Question number: 1274

» Properties of Solids & Liquids » Heat Transfer » Radiation

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MCQ▾

### Question

Consider two hot bodies B 1 and B 2 which have temperature 100° C and 80° C respectively at t = 0. The temperature of surroundings is 40° C. The ratio of the respective rates of cooling R 1 and R 2 of these two bodies at t = 0 will be,

### Choices

Choice (4) Response

a.

R 1: R 2 = 4: 5

b.

R 1 : R 2 = 2: 3

c.

R 1: R 2 = 5: 4

d.

R 1: R 2 = 3: 2

## Question number: 1275

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MCQ▾

### Question

Which of the series of hydrogen spectrum are not in the visible region?

(1) Lyman series (2) Paschen series

(3) Bracket series (4) Balmer series

Select the correct answers and mark it according to the following codes:

### Choices

Choice (4) Response

a.

1 and 3 are correct

b.

1 and 2 are correct

c.

1,2 and 3 are correct

d.

2 and 4 are correct