As observed from the top of a light house, 120 √3 m above the sea level, the angle of depression of a ship sailing towards it changes from 30° to 60°. The distance travelled by the ship during the period of observation is:

Directions : In each of the following questions, some part of the sentence may have errors. Find out which part of the sentence has an error. If a sentence is free from error, select No error

He was smiling, (1)/ but his eyes retained (2)/ a look of solemness.(3)/ No error (4)

When was Nishtha added on Diksha Portal?

Which actor has recently become the new chairman of 'National School of Drama' (NSD)?

How many expenditure observers have been appointed by the Election Commission to monitor black money and high expenditure in Bihar elections?

In the Right to Education Act, 2009 minimum working hours per week for teachers are mentioned?

On 21 October 2020, the Union Cabinet approved the Memorandum of Understanding between India and which country for peaceful purpose?

In a certain code language, ‘Floors white marble’ is written as ‘tp aj pr’, ‘Tyre are hard white’ is written as ‘pr qs tr ak’ and ‘Marble are shiny’ is written as ‘tp tr 6’. What is the code for ‘Shiny floors’ in that code language?