# Physics [NSTSE (National Science Talent Search Exam- Unified Council) Class 9]: Questions 237 - 241 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 237

Edit

### Question

MCQ▾

If two forces of and act on a body in opposite direction in a straight line as shown in figure, then the resultant force is:

### Choices

Choice (4)Response

a.

in the direction from to

b.

in the direction from to

c.

in the direction from to

d.

in the direction from to

## Question 238

Edit

### Question

MCQ▾

The SI unit of the universal constant of gravitation is:

### Choices

Choice (4)Response

a.

b.

c.

d.

## Question 239

Physics
Edit

### Question

MCQ▾

The speed of a sound wave in air is at temperature of air and speed of same sound wave in air is at temperature of air . If the temperature is more than temperature , then which of the following is correct?

### Choices

Choice (4)Response

a.

b.

c.

d.

All of the above

## Question 240

Edit

### Question

MCQ▾

If the mass of a heavenly body is half of that of the earth and a radius is twice of that of the earth, then the weight of a block on this heavenly body, which weight on the earth is will be:

### Choices

Choice (4)Response

a.

b.

c.

d.

## Question 241

Edit

### Question

MCQ▾

Three blocks and of masses and respectively are connected by a light inextensible string and they are moved on a smooth horizontal plane. If a force of is applied to the string connected to

The ratio of and , the tensions in the string is:

### Choices

Choice (4)Response

a.

b.

c.

d.