# NEET (NTA)-National Eligibility cum Entrance Test (Medical) Physics: Questions 1246 - 1249 of 2320

Access detailed explanations (illustrated with images and videos) to 2320 questions. Access all new questions we will add tracking exam-pattern and syllabus changes. Unlimited Access for Unlimited Time! View Sample Explanation or View Features.

Rs. 600.00 or

How to register?

## Question number: 1246

Edit
MCQ▾

### Question

A hydrogen atom moving at a speed v absorbs a photon of wavelength 122 nm and stops. Find the value of v. (Mass of hydrogen atom = 1.67 × 10 -27 kg)

### Choices

Choice (4)Response

a.

3.5 m/s

b.

3.05 m/s

c.

32.5 m/s

d.

3.25 m/s

## Question number: 1247

Edit
Assertion-Reason▾

### Assertion (Ꭺ)

A large soap bubble expands while a small bubble shrinks, when they are connected to each other by capillary tube.

### Reason (Ꭱ)

The excess pressure inside bubble (or drop) is inversely proportional to the radius.

### Choices

Choice (4)Response

a.

Both Ꭺ and Ꭱ are true and Ꭱ is the correct explanation of Ꭺ

b.

Both Ꭺ and Ꭱ are false

c.

Ꭺ is true but Ꭱ is false

d.

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

## Question number: 1248

Edit
MCQ▾

### Question

Water is filled in a cylindrical container to a height of 3m. The ratio of the cross-sectional area of the orifice and the beaker is 0.2. The square of the speed of the liquid coming out from the orifice at height 0.525 is, (g = 10m/s 2)

### Choices

Choice (4)Response

a.

51.56 m 2 /s 2

b.

52.43. m 2 /r

c.

50.55 m 2 /s 2

d.

50.64 m 2 /s 2

## Question number: 1249

Edit
MCQ▾

### Question

A brass rod is to support a load of 400 N. If its elastic limit is 4.0 × l0 8 N/m 2 its minimum diameter must be -

### Choices

Choice (4)Response

a.

1.13mm

b.

4.52mm

c.

3.71mm

d.

2.26mm

Developed by: