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X-rays can be used to: 1. Inspect welded joints between two metal parts of a machine 2. Study structure of crystals

In a simple astronomical telescope,the objective and the eyepiece used respectively,are

A sound wave travelling at a sed of 330m/s produces 20 crests and 20 troughs in 0.1 second. The wavelength of the sound wave is

Assume 'A' does 500J of work in 'x' minutes and 'B' does 1000J of work in 20 minutes. If the power delivered by 'A' is P1 and 'B' is P2 and P1=2P2, then 'x' in minutes is

The human eye has a point that lacks photoreceptors cells. This is identified as

Which one among the following statements related to electric cells is correct?

An X-ray beam can be deflected by

Which one of the following gives the triple point of water?

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At which among the following Harappan sites are fire altars found?

Which one of the following Harappan sites was a specialised centre for making shell objects?

Which one among the following statements with reference to the Harappan burial rituals is not correct?

In the Mesopotamian records,the Indus valley region is addressed as

In the citadel and lower town areas of which one of the following Harappan cities,have several large cisterns and reservoirs been found?

Most of the mature Harappan sites in the region of Cholistan had been abandoned during

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