# Physics [NSTSE (National Science Talent Search Exam- Unified Council) Class 9]: Questions 212 - 219 of 285

Access detailed explanations (illustrated with images and videos) to 2000 questions. Access all new questions- tracking exam pattern and syllabus. View the complete topic-wise distribution of questions. Unlimited Access & Unlimited Time!

View Sample Explanation or View Features.

Rs. 550.00 -OR-

## Question 212

Edit

### Question

MCQ▾

If a particle is taken to a height above the earth’s surface, where is equal to the radius of the earth. The acceleration due to gravity there is:

### Choices

Choice (4)Response

a.

b.

c.

d.

## Question 213

Physics
Edit

### Question

MCQ▾

The bob of a pendulum moves from the mean position to an extreme position in . Then the time period of the pendulum is:

### Choices

Choice (4)Response

a.

b.

c.

d.

### Passage

A object traveling with velocity collides head on with a object initially at rest. The collision is inelastic and after the collision both object are stuck together.

## Question 214 (1 of 2 Based on Passage)

Edit

### Question

MCQ▾

Velocity of the combination after the collision is:

### Choices

Choice (4)Response

a.

b.

c.

d.

## Question 215 (2 of 2 Based on Passage)

Edit

### Question

MCQ▾

The fraction of the kinetic energy lost during the collision is:

### Choices

Choice (4)Response

a.

b.

c.

d.

## Question 216

Physics
Edit

### Question

MCQ▾

If a body vibrating times in a minute and speed of the sound through this vibrating body in air is , then wavelength of the sound is approximately:

### Choices

Choice (4)Response

a.

b.

c.

d.

## Question 217

Physics
Edit

### Question

MCQ▾

If a wave of frequency travels in the air with speed of , then the wavelength of the wave is:

### Choices

Choice (4)Response

a.

b.

c.

d.

## Question 218

Physics
Edit

### Question

MCQ▾

The time period of a pendulum whose length is is:

### Choices

Choice (4)Response

a.

b.

c.

d.

## Question 219

Edit

### Question

MCQ▾

The kinetic energy of Object is same as Object 2. But mass of object 1 is more than that of object 2. If and are the momentum of the object 1 and object 2 respectively, then which of the following is true?

### Choices

Choice (4)Response

a.

b.

c.

d.

None of the above