# NEET (NTA)-National Eligibility cum Entrance Test (Medical) Physics: Questions 1680 - 1684 of 2184

Access detailed explanations (illustrated with images and videos) to 2184 questions. Access all new questions we will add tracking exam-pattern and syllabus changes. Subscription can be renewed yearly absolutely FREE! View Sample Explanation or View Features.

Rs. 550.00 or

How to register?

## Question number: 1680

Edit
MCQ▾

### Question

The kinetic energy of a particle executing S. H. M. is 16 J when it is in its mean position. If the amplitude of oscillations is 25 cm and the mass of the particle is 5.12 kg, the time period of its oscillation is

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 1681

» Oscillations and Waves » Simple Harmonic Motion » Oscillations of a Spring

Edit
MCQ▾

### Question

A spring of force constant k is cut into two pieces such that one piece is double the length of the other. Then the short piece will have a force constant of

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 1682

Edit
MCQ▾

### Question

The energy gap for diamond is nearly

### Choices

Choice (4) Response

a.

1 eV

b.

4 eV

c.

6 eV

d.

2 eV

## Question number: 1683

Edit
MCQ▾

### Question

The intrinsic semiconductor becomes an insulator at

### Choices

Choice (4) Response

a.

0°C

b.

300 K

c.

0 K

d.

-100°C

## Question number: 1684

Edit
MCQ▾

### Question

A piece of copper and the other of germanium are cooled from the room temperature to 80 K, then which of the following would be wrong statements?

(1) Resistance of each Increase

(2) Resistance of each Decrease

(3) Resistance of copper increases while that of germanium decreases

(4) Resistance of copper decreases while that of germanium increases

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

### Choices

Choice (4) Response

a.

1 and 2 are correct

b.

2 and 4 are correct

c.

1,2 and 3 are correct

d.

1 and 3 are correct