# NEET (NTA)-National Eligibility cum Entrance Test (Medical) Physics: Questions 1317 - 1321 of 2320

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## Question number: 1317

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MCQ▾

### Question

Light of wavelength 3320 A is incident on metal surface (work function = 1.07 eV). To stop emission of photo electron, retarding potential required to be

(Take hc = 12420 eV- Å)

### Choices

Choice (4)Response

a.

2.67 V

b.

3.74 V

c.

4.81V

d.

1.07 V

## Question number: 1318

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MCQ▾

### Question

Which graph represents the variation of surface tension with temperature over small temperature ranges for water?

### Choices

Choice (4)Response

a.

b.

c.

d.

## Passage

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

A bar of cross section A is subjected to equal and opposite tensile forces F at its ends. Consider a plane through the bar making an angle θ with a plane at right angles to the bar as shown in figure.

## Question number: 1319 (1 of 1 Based on Passage) Show Passage

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MCQ▾

### Question

The tensile stress, at this plane in terms of F, A and θ is

### Choices

Choice (4)Response

a.

b.

c.

d.

## Question number: 1320

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MCQ▾

### Question

An ideal gas at 27°C is compressed adiabatically to of its original volume. If , then the rise in temperature

### Choices

Choice (4)Response

a.

405 K

b.

225 K

c.

450 K

d.

375 k

## Question number: 1321

Edit
MCQ▾

### Question

Velocity of a proton is . Associated de-Broglie wavelength is (Take h = 6.626 × 10 -34 J-s)

### Choices

Choice (4)Response

a.

2.64 × 10 -14 m

b.

2.64 × 10 -24 cm

c.

2.64 × 10 -24 mm

d.

2.64 × 10 -14 A

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