# NEET Physics: Questions 509 - 512 of 2142

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## Question number: 509

MCQ▾

### Question

Resistance in the two gaps of a meter bridge are 10 ohm and 30 ohm respectively. If the resistances are interchanged the balance point shifts by

### Choices

Choice (4) Response

a.

33.3 cm

b.

50 cm

c.

66.67 cm

d.

25 cm

## Question number: 510

MCQ▾

### Question

In given figure, the potentiometer wire AB has a resistance of 5 Ω and length 10 m. What is the balancing length AM for the emf of 0.4 V?

### Choices

Choice (4) Response

a.

4 m

b.

0.4 m

c.

8 m

d.

0.8 m

## Question number: 511

MCQ▾

### Question

How can we convert the galvanometer of and current into Ammeter with maximum range of 6A.

### Choices

Choice (4) Response

a.

By adding a resistance 2.5mΩ in series with the galvanometer

b.

By adding a resistance 6mΩ in series with the galvanometer

c.

By adding a resistance 6mΩ . in parallel with the galvanometer

d.

By adding a resistance 2.5mΩ in parallel with the galvanometer

## Question number: 512

MCQ▾

### Question

A heater coil connected to a supply of a 220 F is dissipating some power P 1. The coil is cut into half and the two halves are connected in parallel. The heater now dissipates a power P 2. The ratio of power P 1: P 2 is

### Choices

Choice (4) Response

a.

1: 4

b.

1: 2

c.

2: 1

d.

4: 1

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