# Physics (NTSE Stage-1 (State-Level) Scholastic-Aptitude & Language Comprehension): Questions 82 - 86 of 136

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## Question number: 82

» Physics » Magnetism & Electricity at Work

Appeared in Year: 2013

MCQ▾

### Question

An electric iron draws a current of 15 A from 220V supply. What is the cost of using iron for 30 min every day for 15 days if the cost of unit (1 unit = 1 KW/hr) is 2 rupees?

### Choices

Choice (4) Response

a.

Rs. 60

b.

Rs. 40

c.

Rs. 10

d.

Rs49.5

## Question number: 83

» Physics » Motion and Force

Appeared in Year: 2013

MCQ▾

### Question

The speed-time relation of a car whose weight is 1500 kg has shown in the given graph. How much braking force has been applied at the end of 7sec. to stop the car in 2 sec?

### Choices

Choice (4) Response

a.

1200N

b.

9000N

c.

4800N

d.

2000N

## Question number: 84

» Physics » Motion and Force

Appeared in Year: 2013

MCQ▾

### Question

The speeds of sound in air and sea-water are given to be 340 m/s and 1440 m/s, respectively. A ship sends a strong signal straight down and detects its echo after 1.5 s. The depth of the sea at that point is

### Choices

Choice (4) Response

a.

0.255 km

b.

2.16 km

c.

1.08 km

d.

0.51 km

## Question number: 85

» Physics » Motion and Force

Appeared in Year: 2013

MCQ▾

### Question

The distance covered by a body moving along X-axis with initial velocity V and uniform acceleration ‘a’ is given by . This result is a consequence of:

### Choices

Choice (4) Response

a.

Newton’s III rd law

b.

Newton’s I st law

c.

Newton’s II nd law

d.

None of the above

## Question number: 86

» Physics » Magnetism & Electricity at Work

MCQ▾

### Question

A technician has 10 resistors each of resistance 0.1Ω. The largest and smallest resistances that he can obtain by combining these resistors are

### Choices

Choice (4) Response

a.

1 Ω and 0.01 Ω respectively

b.

1 Ω. and 0.1 Ω respectively

c.

10 Ω and 1 Ω respectively

d.

0.1 Ω and 0.01 Ω. Respectively

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