Gamma Question Bank for Engineering Physics>Chapter 30 - Experimental Physics>EXERCISE 16.2>Q 12

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Graph of position of image $(v)$ versus position of point object $(u)$ from a convex lens is shown. The focal length of the lens in $(cm)$ is (Least count of scale is $0.1 cm$ )

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Important Questions on Experimental Physics

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Gamma Question Bank for Engineering Physics>Chapter 30 - Experimental Physics>EXERCISE 16.2>Q 13

In a resonance tube of length

2 m

. When a tuning fork is used first length is measured as

6.2 cm

and second length is measured as

20 cm

. The end correction obtained in the experiment is

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Gamma Question Bank for Engineering Physics>Chapter 30 - Experimental Physics>EXERCISE 16.2>Q 14

In an experiment image distance was

0.80 m

for an object distance

0.20 m

from a concave mirror. Its focal length is

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Gamma Question Bank for Engineering Physics>Chapter 30 - Experimental Physics>EXERCISE 16.2>Q 15

In an experiment a wire of diameter

5.0 mm

is stretched by a force of

200 kg

weight.

Y = (12.5 \times 10^{11}) dyne m^{- 2}

. The percentage increase in its length is

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Gamma Question Bank for Engineering Physics>Chapter 30 - Experimental Physics>EXERCISE 16.2>Q 16

In a meter bridge experiment, the one meter long wire used must possess

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Gamma Question Bank for Engineering Physics>Chapter 30 - Experimental Physics>EXERCISE 16.2>Q 17

A wire has mass

(0.4 \pm 0.004) g

, radius

(0.6 \pm 0.006) cm

and length

(8 \pm 0.08) cm

. The maximum percentage error in the measurement of its density is

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Gamma Question Bank for Engineering Physics>Chapter 30 - Experimental Physics>EXERCISE 16.2>Q 18

In case of determination of speed using resonances column, the major systematic errors are introduced due to effects of

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Gamma Question Bank for Engineering Physics>Chapter 30 - Experimental Physics>EXERCISE 16.2>Q 19

In the Searle's experiment after every loading a gap of short interval is given to ensure that

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Gamma Question Bank for Engineering Physics>Chapter 30 - Experimental Physics>Assignment>Q 1

Screw gauge is said to have a negative error