See all posts by Peter Stephens The recent stock market crash has caused a number of UK shares to offer relatively high dividend yields. Certainly, there is a risk that they will follow the actions of other stocks and cut shareholder payouts in response to weak operating conditions. However, in many cases, FTSE 100 and FTSE 250 stocks offer impressive income returns that appear to be relatively stable.As such, now could be the right time to buy a selection of bargain UK shares with high yields to generate a passive income. Through focusing your capital on solid businesses, you could obtain a significantly higher income return than that available from other mainstream assets.5G is here – and shares of this ‘sleeping giant’ could be a great way for you to potentially profit!According to one leading industry firm, the 5G boom could create a global industry worth US$12.3 TRILLION out of thin air…And if you click here we’ll show you something that could be key to unlocking 5G’s full potential…High dividend yields after a stock market crashThe stock market crash has caused the prices of a wide range of UK shares to decline heavily. Although in some cases they have rebounded strongly, a large number of FTSE 100 and FTSE 250 stocks currently offer high dividend yields.Although there are risks facing investors, such as a weak economic outlook, that could cause dividend growth to decline, some companies have reported a modest financial impact from recent events. Through building a portfolio of such companies, you may be able to not only obtain a high income return, but develop a resilient passive income that has the potential to grow in the coming years.Furthermore, investors may wish to focus their capital on dividend shares that can withstand a second market crash. For example, buying UK shares with solid balance sheets, affordable dividends and defensive characteristics could lead to a more robust passive income in the coming years.Relative appealCertainly, a second stock market crash could cause paper losses for income investors. However, the yields on offer from a number of companies in the FTSE 100 and FTSE 250 suggest that this risk has been factored-in by investors.Therefore, the income returns that can be achieved from the stock market relative to other mainstream assets suggest that their risk/reward opportunity is more attractive. For example, cash savings accounts offer interest rates that are less than 1% in many cases, while investment-grade bonds also offer disappointing passive income opportunities.Managing riskThrough building a diverse portfolio of UK dividend shares after the market crash, you can reduce your overall risks. This will not insulate you from a potential downturn in the wider stock market, but it can help to improve the reliability of your passive income due to reducing your reliance on a small number of companies.Over time, those stocks could offer a growing dividend return, as well as a high initial yield, that boosts your passive income relative to other assets. As such, now could be the right time to start buying FTSE 100 and FTSE 250 shares that offer solid financial positions and impressive yields. Renowned stock-picker Mark Rogers and his analyst team at The Motley Fool UK have named 6 shares that they believe UK investors should consider buying NOW.So if you’re looking for more stock ideas to try and best position your portfolio today, then it might be a good day for you. Because we’re offering a full 33% off your first year of membership to our flagship share-tipping service, backed by our ‘no quibbles’ 30-day subscription fee refund guarantee. Image source: Getty Images. Click here to claim your copy now — and we’ll tell you the name of this Top US Share… free of charge! Stock market crash: I’d buy and hold cheap UK dividend shares for a passive income “This Stock Could Be Like Buying Amazon in 1997” I would like to receive emails from you about product information and offers from The Fool and its business partners. Each of these emails will provide a link to unsubscribe from future emails. More information about how The Fool collects, stores, and handles personal data is available in its Privacy Statement. Peter Stephens | Saturday, 8th August, 2020 Our 6 ‘Best Buys Now’ Shares Simply click below to discover how you can take advantage of this. Enter Your Email Address I’m sure you’ll agree that’s quite the statement from Motley Fool Co-Founder Tom Gardner.But since our US analyst team first recommended shares in this unique tech stock back in 2016, the value has soared.What’s more, we firmly believe there’s still plenty of upside in its future. In fact, even throughout the current coronavirus crisis, its performance has been beating Wall St expectations.And right now, we’re giving you a chance to discover exactly what has got our analysts all fired up about this niche industry phenomenon, in our FREE special report, A Top US Share From The Motley Fool.