# Experimental Skills (NEET Physics): Questions 64 - 67 of 67

Get 1 year subscription: Access detailed explanations (illustrated with images and videos) to 2142 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: 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

## Question number: 65

» Experimental Skills » Potentiometer

MCQ▾

### Question

Which of the following operations will not increase the sensitivity of a potentiometer?

### Choices

Choice (4) Response

a.

Increase in the number of wires of the potentiometer.

b.

Reducing the potential gradient.

c.

Increasing the sensitivity of the galvanometer.

d.

Increasing the current through the potentiometer

## Question number: 66

» Experimental Skills » Meter Bridge

MCQ▾

### Question

A meter-bridge is based on the principle of

### Choices

Choice (4) Response

a.

Wheatstone bridge

b.

Variation of resistance with temperature

c.

Galvanometer

d.

None of the above

## Question number: 67

» Experimental Skills » Potentiometer

Appeared in Year: 2017

MCQ▾

### Question

A potentiometer is an accurate and versatile device to make electrical measurements of E. M. F. because the method involves:

### Choices

Choice (4) Response

a.

Cell

b.

A combination of cells, galvanometer and resistance

c.

Potential gradients

d.

A condition of no current flow through the galvanometer

f Page