# NEET Physics: Questions 452 - 455 of 2098

Get 1 year subscription: Access detailed explanations (illustrated with images and videos) to 2098 questions. Access all new questions we will add tracking exam-pattern and syllabus changes. View Sample Explanation or View Features.

Rs. 550.00 or

## Question number: 452

Assertion-Reason▾

### Assertion (Ꭺ)

Torque is equal to rate of change of angular momentum.

### Reason (Ꭱ)

Angular momentum depends on moment of inertia and angular velocity.

### Choices

Choice (4) Response

a.

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

b.

Ꭺ is false but Ꭱ is true

c.

Both Ꭺ and Ꭱ are false

d.

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

## Question number: 453

MCQ▾

### Question

If V and u are electric potential and energy density, respectively, at a distance r from a positive point charge, then which of the following graph is correct?

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 454

MCQ▾

### Question

In a bicycle, the radius of rear wheel is twice the radius of front wheel. If r F and r r are the radius, v p and v r are speeds of top most points of wheel, then

### Choices

Choice (4) Response

a.

v r = 2v F

b.

v F = v r

c.

v F = 2v r

d.

v F > v r

## Question number: 455

MCQ▾

### Question

When a cell of emf E and internal resistance r, is connected to the ends of a resistance R, then current through resistance is I. If the same cell is connected to the ends of a resistance then the current would be

### Choices

Choice (4) Response

a.

less than I

b.

I

c.

Greater than I but less than 2I

d.

Greater than 2I