# NEET Physics: Questions 44 - 47 of 2142

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## Question number: 44

Assertion-Reason▾

### Assertion (Ꭺ)

L/R and CR both have same dimensions.

### Reason (Ꭱ)

L/R and CR both have dimension of time.

### Choices

Choice (4) Response

a.

Both Ꭺ and Ꭱ are false

b.

Ꭺ is true but Ꭱ is false

c.

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

d.

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

## Question number: 45

MCQ▾

### Question

A particle starts from rest. Its acceleration (a) versus time (t) graph is as shown in the figure. The maximum speed of the particle will be

### Choices

Choice (4) Response

a.

110m/s

b.

550m/s

c.

660m/s

d.

55m/s

## Question number: 46

MCQ▾

### Question

P, Q and R are three balloons ascending with velocities U, 4U and 8U respectively. If stones of the same mass be dropped from each, when they are at the same height, then

### Choices

Choice (4) Response

a.

Stone from R reaches the ground first

b.

They reach the ground at the same time

c.

Stone from P reaches the ground first

d.

Stone from Q reaches the ground first

## Question number: 47

MCQ▾

### Question

Three different objects of masses m1, m2 and w3 are allowed to fall from rest and from the same point ‘O’ along three different frictionless paths. The speeds of the three objects, on reaching the ground, will be in the ratio of

### Choices

Choice (4) Response

a.

b.

m 1 : m 2: m 3

c.

1: 1: 1

d.

m 1 : 2m 2: 3m 3

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