# Experimental Skills (NEET (NTA)-National Eligibility cum Entrance Test (Medical) Physics): Questions 61 - 64 of 67

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## Question number: 61

» Experimental Skills » Potentiometer

MCQ▾

### Question

If we replaced potentiometer wire by another wire having more resistivity, than potential gradient will be,

### Choices

Choice (4) Response

a.

Remain same

b.

Increasing

c.

may increase or may decrease.

d.

Decreasing

## Question number: 62

» Experimental Skills » Potentiometer

MCQ▾

### Question

A potentiometer works on the principle that

### Choices

Choice (4) Response

a.

when a current flows through a wire of uniform thickness and material, potential difference between its two points is inversely proportional to the length of the wire between the points

b.

when a current flows through a wire of uniform thickness and material, potential difference between its two points doesn’t depend on the length of the wire between the points

c.

when a current flows through a wire of uniform thickness and material, potential difference between its two points is directly proportional to the length of the wire between the two points

d.

All of the above

## Question number: 63

» Experimental Skills » Galvanometer

MCQ▾

### Question

A current of 4A produces a deflection of 30° in the galvanometer. The figure of merit is

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 64

» Experimental Skills » Focal Length

MCQ▾

### Question

In an experiment to measure the focal length of a concave mirror, it was found that for an object distance of 0.45 m, the image distance come out to be 0.90 m. Determine the focal length.

### Choices

Choice (4) Response

a.

(0.2 ± 0.02) m

b.

(0.1 ± 0.02) m

c.

(0.3 ± 0.01) m

d.

(0.3 ± 0.02) m

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